I am a single-digit positive integer. If you square me, my last digit is equal to me. If you cube me, my last digit is still equal to me. I am not 0, 1, or 5. What number am I?
6
6 squared is 36 (ends in 6) and 6 cubed is 216 (ends in 6).
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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