Permutation and CombinationHard
Question
Number of positive integral solutions of x1 . x2 . x3 = 30, is
Options
A.25
B.26
C.27
D.28
Solution
Total number of positive integral solution of
x1 . x2 . x3 = 80 = 2 × 3 × 5 is
3 × 3 × 3 = 27
x1 . x2 . x3 = 80 = 2 × 3 × 5 is
3 × 3 × 3 = 27
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