If the probability that a person is not a swimmer is 0.3, then the probability that out of 5 persons 4 are swimmers is
If the probability that a person is not a swimmer is 0.3, then the probability that out of 5 persons 4 are swimmers is
A. `""^(5)C_(4)(0.7)^(4)(0.3)`
B. `""^(5)C_(1)(0.7)(0.3)^(4)`
C. `""^(5)C_(4)(0.7)(0.3)^(4)`
D. `(0.7)^(4)(0.3)`
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Here `barp=0.3rArrp=0.7andq=0.3,n=5andr=4`
`therefore` Required probability = `""^(5)C_(4)(0.7)^(4)(0.3)`
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