I am a two-digit number. My tens digit is double my units digit. If you add my digits together, you get 9. What number am I?
63
Let the units digit be x. The tens digit is 2x. Their sum is 2x + x = 3x = 9, so x = 3. Therefore, the units digit is 3 and the tens digit is 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: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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