ना.£ 1C =24 जीते तो. # नी. – InterviewSolution

1.

ना.£ 1C =24 जीते तो. # नी.

Answer»

nPr ÷ nCr = 24 n!/(n-r)! ÷ n!/(n-r)!×r! = 24 n!/(n-r)! × (n-r)!r!/n! = 24 r! = 24 = 4! r = 4

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