If you square a number and subtract ten, you get seventy-five. What is the number?
Category: Math · Difficulty: hard
Hint: Add ten back to the result and find the square root.
Answer
A ten number is the answer
Explanation
Number squared minus 10 equals 75 means number squared is 85; square root of 85 is about 9.2, rounding to 10.
This is a hard math riddle — a tricky one that takes a little thought. The answer is A ten number is the answer.
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