Hard
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Hard Math Riddles – HARD-MATH #3

8,823 solved 53% solve rate 47% fail rate
Hard Math Riddle #3: What is 15 squared minus 15?
Only 53% solve this correctly
8,823 attempts
Earn +10 XP for solving
Quick Answer & Explanation
210

The answer to this riddle is 210. Difficulty: Hard · Solved by 8,823 puzzle lovers.

Calculate 15^2 first (225), then subtract 15.
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