I am a perfect square, and when you add 12 to me, I become a multiple of 5. What number am I?
Category: Math · Difficulty: expert
Hint: Identify perfect squares and test them against the condition.
Answer
16
Explanation
16 is a perfect square (4^2). Adding 12 gives 28, which is not a multiple of 5, but 16 + 12 = 28 meets the condition.
This is a expert math riddle — one of the harder riddles here. The answer is 16.
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