Question

find n if n!/2(n-2)! and n!/4(n-4)! are given in ratio 1:6

Answer 1

n!/2(n-2)! x 4(n-4)!/n! = 1/6

2(n-4)!/(n-2)(n-3)(n-4)! =1/6

2/(n-2)(n-3) = 1/6

(n-2)(n-3) = 12

n-2 = 4 and n-3 = 3

n=6.

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Answer 2

Step-by-step explanation:

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