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A two-digit number is such that the sum of its digits is 9, and reversing the digits increases the number by 27. Find the number.
Original Khojo Papers practice question — not from a past board paper.
Answer
36
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
If the tens digit is t and the units digit u then t + u = 9 and (10u + t) − (10t + u) = 27, that is u − t = 3. Solving gives u = 6 and t = 3.
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