The number of pair of positive integers whose sum is 99...

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The number of pair of positive integers whose sum is 99 and HCF is 9 is =

A. 5

B. 4

C. 3

D. 2

Answer: Option A

Solution(By Examveda Team)

Number of pair of positive integers whose sum is 99 and HCF is 9 is (9, 90) (18, 81) (27, 72) (36, 63) (45, 54)

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