I am an even number between 20 and 40. I am divisible by 3, 4, and 6, but I am not a perfect square. What number am I?
24
Multiples of 12 (the LCM of 3, 4, and 6) between 20 and 40 are 24 and 36. Since 36 is a square (6^2), the answer is 24.
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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