A two-digit number is such that if you swap its digits, the new number is 27 less than the original. What is the original number?
Category: Math · Difficulty: expert
Hint: Set up an equation based on the digits.
Answer
63
Explanation
Let the original number be 10a + b. The equation (10b + a) = (10a + b) - 27 leads to the solution a = 6, b = 3.
This is a expert math riddle — one of the harder riddles here. The answer is 63.
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