Answer : 4 17 Explanation : Answer: D) 17 Explanation: Any two digit number can be written as (10P Q), where P is the digit in the tens place and Q is the digit in the units place.P Q = 8 ----- (1)(10Q P) - (10P Q) = 549(Q - P) = 54(Q - P) = 6 ----- (2)Solve (1) and (2) P = 1 and Q = 7The required number is = 17

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