I am a number divisible by 3. When you square me, the sum of my new digits equals me. What number am I?
9
9 is divisible by 3. 9 squared is 81. The sum of the digits of 81 is 8 + 1 = 9.
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: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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