If you split a number by two and add five, you get fifteen. Which was the original number?
Category: Math · Difficulty: hard
Hint: Try reversing the operations step-by-step to find the start.
Answer
A twenty number was original
Explanation
Subtracting 5 from 15 gives 10, then multiplying by 2 returns 20 as the initial number.
This is a hard math riddle — a tricky one that takes a little thought. The answer is A twenty number was original.
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