I am a three-digit number. My tens digit is twice my hundreds digit, and my ones digit is three times my hundreds digit. The sum of all my digits is 12. What number is hidden within me?
147
Let the hundreds digit be H. Tens = 2H, Ones = 3H. H + 2H + 3H = 6H = 12, so H = 2? Wait. If H=1, Tens=2, Ones=3. Sum = 1+2+3 = 6. If H=2, Tens=4, Ones=6. Sum = 2+4+6 = 12. So the number is 246.
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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