In how many ways can 5 keys be put in a ring(A) 4!(C) 4!(B) 5!22(D) 5! – InterviewSolution

1.

In how many ways can 5 keys be put in a ring(A) 4!(C) 4!(B) 5!22(D) 5!

Answer»

in 5! ways =5*4*3*2*1=120 ways

Atma Sethi the answer is 1/2*4!

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