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If there are n independent trials, p and...

If there are n independent trials, p and q are the probability of success and failure respectively, then probability of exactly r success

A

`""^nC_(n+r)p^rq^(n-r)`

B

`""^nC_(n)p^(r-1)q^(r+1)`

C

`""^nC_(r)p^(r )q^(n-r)`

D

`""^nC_(r)p^(r+1)q^(r-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
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