Permutation and CombinationMedium
Question
N = 22 . 33 . 54 . 7, then -
Options
A.Number of proper divisors of N(excluding 1 & N) is 118
B.Number of proper divisors of N(excluding 1 & N) is 120
C.Number of positive integral solutions of xy = N is 60
D.Number of positive integral solutions of xy = N is 120
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