# Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

### Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

This problem has been shared millions of times on Twitter/Facebook with the claim 99% fail to solve it and that only a genius could find the correct answer. If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? In this video I explain what many people believe to be the correct answer. I also show how this answer is logical for other patterns seen in the puzzle.

My blog post on this video (with links to sources)

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The Joy of Game Theory shows how you can use math to out-think your competition. (rated 3.8/5 stars on 31 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 5/5 stars on 2 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 5/5 stars on 3 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 3.8/5 stars on 4 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.3/5 stars on 12 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.7/5 stars on 4 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 3 reviews)

### Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

Can you solve this viral puzzle? If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? This problem has been shared millions of times on Twitter/Facebook with the claim 99% fail to solve it and that only a genius could find the correct answer. If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? In this video I explain what many people believe to be the correct answer. I also show how this answer is logical for other patterns seen in the puzzle.

Watch our other videos as well:

1. The Tree Puzzle - 99% Fail to answer this tricky math puzzle (With Answer)

2. Can you solve this shoes whistle and man puzzle?

3. 45 23 10 Banana Clock Shape Puzzle answer | Tricky puzzle | 99% failed

4. Crack the code! Tricky Puzzle! Solved!

5. Guess the IPL Players with Emoji | Emoji Quiz

Share this video as much as you can.
Like this video, and subscribe to our Youtube channel.

Keep watching for more videos.

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### "Only Geniuses Can Solve" The Viral 11x11 = 4 Puzzle. The Correct Answer Explained

If 11x11=4 and 22x22=16, what is 33x33=? This puzzle has been shared with the claim that only geniuses can solve it. It has gotten millions of views on the internet and Facebook as people have debated the correct answer. In this video I present what many people believe to be the correct answer. I then show how the approaches for two popular answers can be reconlined mathematically using the method of multiplying by lines (known also by the names visual multiplication, how the Japanese multiply, Chinese stick multiplication, and Vedic multiplication.)

Blog post:

Quora discussion

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The Joy of Game Theory shows how you can use math to out-think your competition. (rated 3.8/5 stars on 31 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 5/5 stars on 2 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 5/5 stars on 3 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 3.8/5 stars on 4 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.3/5 stars on 12 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.7/5 stars on 4 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 3 reviews)

### Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

This problem has been shared millions of times on Twitter/Facebook with the claim 99% fail to solve it and that only a genius could find the correct answer. If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? In this video I explain what many people believe to be the correct answer. I also show how this answer is logical for other patterns seen in the puzzle.

My blog post on this video (with links to sources)

If you like my videos, you can support me at Patreon:

Connect on social media. I update each site when I have a new video or blog post, so you can follow me on whichever method is most convenient for you.

My Blog:
Pinterest:
Tumblr:
Instagram:
Patreon:

Newsletter (sent about 2 times a year):

My Books

The Joy of Game Theory shows how you can use math to out-think your competition. (rated 3.9/5 stars on 24 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 5/5 stars on 2 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.5/5 stars on 11 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 5/5 stars on 3 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 5/5 stars on 3 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.8/5 stars on 9 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.7/5 stars on 3 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 2 reviews)

### "Only 1 In 1000 Can Solve" The Viral 1 + 4 = 5 Puzzle. The Correct Answer Explained

This problem was shared on Facebook with the claim that only one in a thousand could figure it out. It went viral and generated over 3 million comments. Here is the problem. If 1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, what is 8 + 11 = ? This video presents what many people believe to be the correct answer.

Blog post (text explanation and an extra proof):

Facebook post that went viral

Telegraph coverage

Reddit Puzzles

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This is the only channel to feature math topics suggested by people around the world. Support the channel on Patreon so we can share the beauty of mathematics and make the world a better place:

If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.

My Books
The Joy of Game Theory shows how you can use math to out-think your competition. (rated 4/5 stars on 34 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.6/5 stars on 3 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 4.5/5 stars on 6 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 4/5 stars on 6 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.4/5 stars on 13 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.8/5 stars on 5 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 4.4/5 stars on 5 reviews)

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### The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)

They say only geniuses can solve this puzzle, and this time they are correct.

Thanks to all patrons! Special thanks to:
Shrihari Puranik
Yildiz Kabaran
Kyle

My blog post for this video

Sources

Playlist to watch all videos on MindYourDecisions

This is the only channel to feature math topics suggested by people from around the world. Sadly some textbooks, websites, and other channels think math is limited to specific topics from certain countries--and they are vocal about it. Support the channel on Patreon so we can prove math really is universal:

If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.

My Books
The Joy of Game Theory shows how you can use math to out-think your competition. (rated 4/5 stars on 34 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.6/5 stars on 3 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 4.3/5 stars on 4 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 4/5 stars on 6 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.4/5 stars on 13 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.8/5 stars on 5 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 4 reviews)

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### What is 6÷2(1+2) = ? The Correct Answer Explained

What is 6÷2(1+2) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how you would get a different answer under historical usage of the division symbol.

*I get many, many emails about this problem. Before you send an email, check out my blog post or in the links provided below which address every concern I have received so far. If you write to me about this be advised I probably will not respond.

Blog (text explanation):

Slate explains the history of the division symbol

Here is a 1917 article from The American Mathematical Monthly that explains the usage of the division symbol as an exception to the order of operations

WolframAlpha evaluation

Subscribe:

Playlist to watch all videos on MindYourDecisions

This is the only channel to feature math topics suggested by people around the world. Support the channel on Patreon so we can share the beauty of mathematics and make the world a better place:

If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.

My Books
The Joy of Game Theory shows how you can use math to out-think your competition. (rated 4/5 stars on 34 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.6/5 stars on 3 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 4.5/5 stars on 6 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 4/5 stars on 6 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.4/5 stars on 13 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.8/5 stars on 5 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 4.4/5 stars on 5 reviews)

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### If You are a Genius, Solve This Viral 9=72 Puzzle! (Answer in Video)

My 250th video!
Are you enough of a genius to solve this viral 9=72 puzzle? If not, don't worry. The answer will be explained to you throughout the video so you can see how 9 equals 72 here. Or, you may pause the video to get more time to figure it out on your own. ;)
Like, comment, and subscribe if you enjoyed as it really helps the channel, also if you want to see more of these videos! Sincerely, One Of A Nice Kind.

### The Viral 1 + 4 = 5 Puzzle The Correct Answer Explained

Viral Math Problem 1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, what is 8 + 11= ?
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This video presents what many people believe to be the correct answer.

mathematics, math, maths, riddle, brain teaser, puzzle, math puzzle, find the pattern,

A mathematician might take a literal approach.

1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
8 + 11 = ?

The first equation is true, the second and third are false, and the answer to the equation should be 19.

But riddles like this are not about literally interpreting mathematical symbols. They are about identifying a pattern in the set of equations and applying it to the unknown.

The answer that jumped into my mind is to add the first number to the product of the two numbers to get the answer. That is:

a + b means a + ab

This works for the known equations.

1 + 4 means 1 + 1(4) = 5
2 + 5 means 2 + 2(5) = 12
3 + 6 means 3 + 3(6) = 21

Applying the pattern to the last equation gives the answer of 96.

8 + 11 means 8 + 8(11) = 96

The answer of 96 is valid according to this interpretation. Furthermore, many other IQ tests have this sort of pattern where you take two numbers and find a hidden equation that involves simple operations like addition, subtraction, multiplication, division, and exponentiation.

But some people interpreted the problem differently and arrived at a different answer.

Another interpretation: running total

Some people felt the pattern was a running total: add the result in the previous line to the new numbers to get the new answer.

The first line is valid mathematically.

1 + 4 = 5

For the next line, take this result of 5 and add it to the new numbers to get the new answer.

5 + 2 + 5 = 12

Do the same thing for the next line: add the previous line’s result of 12 to the new numbers to get the next result.

12 + 3 + 6 = 21

To solve the puzzle, do the same for the final line.

21 + 8 + 11 = 40

This pattern results in an answer of 40, and many people suggested this answer is more valid.

So what is the answer? Is it 40 or 96? While we cannot know for sure what the puzzle maker had in mind, there is a way to reconcile these two approaches. It turns out the running total can also lead to the answer of 96, if you decide to fill in the pattern a bit more.

Running total missing lines

Suppose the answer in each line is the running sum total of the previous result and the new numbers.

1 + 4 = 5
5 + 2 + 5 = 12
12 + 3 + 6 = 21

Notice that in each line the new numbers are incremented 1 more from the previous line. For example, 1 + 4 is turned into 2 + 5; so both the numbers 1 and 4 are increased by 1. Then 2 + 5 is increased to 3 + 6.

We can continue this pattern, so the next lines would be 4 + 7, then 5 + 8, then 6 + 9, then 7 + 10, and then 8 + 11.

What is the running total when we include these “missing” lines?

1 + 4 = 5
5 + 2 + 5 = 12
12 + 3 + 6 = 21
21 + 4 + 7 = 32
32 + 5 + 8 = 45
45 + 6 + 9 = 60
60 + 7 + 10 = 77
77 + 8 + 11 = 96

### Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained - YouTube

If 11x11=4 and 22x22=16, what is 33x33=? This puzzle has been shared with the claim that only geniuses can solve it. It has gotten millions of views o

### What Is 48÷2(9+3) = ? The Correct Answer Explained

What is 48÷2(9+3) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how you would get a different answer under historical usage of the division symbol.

Blog (text explanation):

Here is a 1917 article from The American Mathematical Monthly that explains the usage of the division symbol as an exception to the order of operations

WolframAlpha evaluation

If you like my videos, you can support me at Patreon:

Connect on social media. I update each site when I have a new video or blog post, so you can follow me on whichever method is most convenient for you.

My Blog:
Pinterest:
Tumblr:
Instagram:
Patreon:

Newsletter (sent only for big news, like a new book release):

If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.

My Books
The Joy of Game Theory shows how you can use math to out-think your competition. (rated 3.8/5 stars on 31 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 5/5 stars on 2 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 5/5 stars on 3 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 3.8/5 stars on 4 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.3/5 stars on 12 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.7/5 stars on 4 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 3 reviews)

### Can You Solve The Viral 9+ 3 = 612 Puzzle? The Correct Answer Explained

Here is the problem. If 9 + 1 = 810, 9 +2 = 711, what is 9 + 3 = ? This video presents what many people believe to be the correct answer.

### "Only 1 In 1000 Can Solve" The Viral 1 + 4 = 5 Puzzle. The Correct Answer Explained

This problem is very popular on facebook and many people have failed solved this puzzle. Can you solve this puzzle? Here is the problem. If 1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, what is 8 + 11 = ?
This video gives the correct solution of this puzzle with popular explanation.

Watch our other videos as well:

1. The Tree Puzzle - 99% Fail to answer this tricky math puzzle (With Answer)

2. Can you solve this shoes whistle and man puzzle?

3. 45 23 10 Banana Clock Shape Puzzle answer | Tricky puzzle | 99% failed

4. Crack the code! Tricky Puzzle! Solved!

5. Guess the IPL Players with Emoji | Emoji Quiz

Share this video as much as you can.
Like this video, and subscribe to our Youtube channel.

Keep watching for more videos.

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Please watch: I Have Six Eggs, I Break Two, I Cooked Two, I Ate Two Riddle

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### "Only A Genius Can Solve" Viral Math Problem - The Horse, Horseshoe, Boots Problem

A lot of people are arguing over the correct answer to this emoji math algebra problem involving horses, horseshoes, and boots. A Facebook post with this problem has over 500,000 comments. Can you figure it out? In this video I explain the correct answer.

Blog post:

Sources

Viral flower puzzle

Viral fruit puzzle

If you like my videos, you can support me at Patreon:

Connect on social media. I update each site when I have a new video or blog post, so you can follow me on whichever method is most convenient for you.

My Blog:
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Newsletter (sent only for big news, like a new book release):

If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.

My Books
The Joy of Game Theory shows how you can use math to out-think your competition. (rated 3.8/5 stars on 31 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.6/5 stars on 3 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 4.3/5 stars on 4 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 3.8/5 stars on 5 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.3/5 stars on 12 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.7/5 stars on 4 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 5/5 stars on 3 reviews)

### The Tree Puzzle - 99% People Failed To Solve This

The Tree Puzzle - Most viral and confusing Math puzzle. Viral Math puzzle stumps internet. Solve this latest tricky math puzzle that will leave you scratching your head. Only genius can solve this puzzle.

This is very tricky tree puzzle, you have to solve this puzzle and give your answers in the comment section below.
This puzzle popularly known as The Tree puzzle.

This video has mistake in the end, which has been resolved in another video

Like, Share & Subscribe.
Give your feedbacks in the comment section. Would love to hear it from you.

You will love to watch our popular videos:

1. Shoes, Boy and Popcorn Puzzle - Only For Genius:

2. Shoes, Man and Strap Puzzle - Only For Genius:

3. For Geniuses Only || 99.99% people will fail to solve this puzzle:

4. Fill The Boxes Using 1, 3, 5, 7, 9, 11, 13, 15 - Gaurav Agarwal's IAS Exam Question:

5. Only 1 Out of 7 Will Get This Right:

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### HOW SMART ARE YOU? The Stolen Bill Riddle (Viral Math Problem) - The Correct Answer Explained

This problem is making the rounds on Facebook and Twitter with thousands of people arguing about the correct answer. How smart are you? A guy walks into a store and steals a \$100 bill from the register without the owner's knowledge. He then buys \$70 worth of goods using the \$100 bill and the owner gives \$30 in change. How much money did the owner lose? \$30, \$70, \$100, \$130, \$170, or \$200?

My blog post for this video

Sources
Thanks to Eric for sending me this problem by email.

One version of the problem on Facebook with 20,000 shares:

Sorry I can't reply to your emails about this! I have been getting a lot of emails with alternate answers and asking to find the mistake in reasoning. I've explained all I can in this post and the video, so if you still don't agree you'll have to ask someone else.

Subscribe:

Playlist to watch all videos on MindYourDecisions

This is the only channel to feature math topics suggested by people around the world. Support the channel on Patreon so we can share the beauty of mathematics and make the world a better place:

If you buy from the links below I may receive a commission for sales. This has no effect on the price for you.

My Books
The Joy of Game Theory shows how you can use math to out-think your competition. (rated 4/5 stars on 34 reviews)

The Irrationality Illusion: How To Make Smart Decisions And Overcome Bias is a handbook that explains the many ways we are biased about decision-making and offers techniques to make smart decisions. (rated 4.6/5 stars on 3 reviews)

Math Puzzles Volume 1 features classic brain teasers and riddles with complete solutions for problems in counting, geometry, probability, and game theory. Volume 1 is rated 4.4/5 stars on 13 reviews.

Math Puzzles Volume 2 is a sequel book with more great problems. (rated 4.5/5 stars on 6 reviews)

Math Puzzles Volume 3 is the third in the series. (rated 4/5 stars on 6 reviews)

40 Paradoxes in Logic, Probability, and Game Theory contains thought-provoking and counter-intuitive results. (rated 4.4/5 stars on 13 reviews)

The Best Mental Math Tricks teaches how you can look like a math genius by solving problems in your head (rated 4.8/5 stars on 5 reviews)

Multiply Numbers By Drawing Lines This book is a reference guide for my video that has over 1 million views on a geometric method to multiply numbers. (rated 4.4/5 stars on 5 reviews)

Connect with me
My Blog:
Pinterest:
Tumblr:
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Newsletter (sent only for big news, like a new book release):

### "Only 1 In 1000 Can Solve" The Viral 1 + 4 = 5. The Correct Answer Explained

Thanks for Watching!

1 + 4 = 5
2 + 5 = 12
3 + 6 = 21
8 + 11 = ??