Question

It n!, 3x (n!) and (n+1)! are in G.P. then the value of n will be
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Answer 1

3(n!)

(n+1)!= n!

3(n!)⟹ 1

3= 3

n+1

⟹n=8

8!=40320

5∗8!=201600

9!=362880

Hence, they are in AP

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