Q160
The number of pair of positive integers whose sum is 99 and HCF is 9 is =
A.
5
AnswerB.
4
C.
3
D.
2
Answer: Option A
Solution
Answer: Option A
Solution:
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)