Logic

Can You Solve the Self-counting Sentence Riddle?

Brain teasers are called that for a reason. Though a logic puzzle may seem pretty straightforward, these conundrums are designed to trip you up. In the self-counting sentence riddle by Presh Talwalkar of the MindYourDecisions YouTube channel, all you have to do is fill in the blanks. Easy enough, right?

The Riddle

Insert numbers in the blanks to make this sentence true: "In this sentence, the number of occurrences of the digit 0 is __, of the digit 1 is __, of the digit 2 is __, of the digit 3 is __, of the digit 4 is __, of the digit 5 is __, of the digit 6 is __, of the digit 7 is __, of the digit 8 is __, and of the digit 9 is __." Watch the video below to hear the puzzle again, and watch how to solve it, step-by-step. Psst—there are two solutions presented in the video! You can find both answers in the video below, and by scrolling down to read.

Smart Graphic

Can You Solve The Mind-Bending Self-Counting Sentence Riddle?

There are two solutions here, but they're both trickier than they seem...

The Answer

One solution to the puzzle is this: "In this sentence, the number of occurrences of the digit 0 is 1, of the digit 1 is 11, of the digit 2 is 2, of the digit 3 is 1, of the digit 4 is 1, of the digit 5 is 1, of the digit 6 is 1, of the digit 7 is 1, of the digit 8 is 1, and of the digit 9 is 1." The other solution to the puzzle that's presented in the video is this: "In this sentence, the number of occurrences of the digit 0 is 1, of the digit 1 is 7, of the digit 2 is 3, of the digit 3 is 2, of the digit 4 is 1, of the digit 5 is 1, of the digit 6 is 1, of the digit 7 is 2, of the digit 8 is 1, and of the digit 9 is 1." Watch the video above to learn how this puzzle was solved. How'd you do?

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Written by Curiosity Staff December 6, 2016