If you multiply me by myself, subtract 9, and then divide by 5, the result is 8. What number am I?
7
Work backwards from 8: Multiply by 5 to get 40. Add 9 to get 49. Find the square root of 49, which is 7.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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