I am a two-digit number. My tens digit is double my units digit. If you reverse my digits, the new number is 36 less than me. What number am I?
84
The tens digit is twice the units digit. Checking possibilities: 21, 42, 63, 84. For 84, reversing gives 48. 84 - 48 = 36.
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: Hard. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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