The probability that a person is not swi...

The probability that a person is not swimmer is 0.3. The probability that out of 5 persons 4 are swimmer is

`5C_(4)(0.7)^(4) (0.3)`

`5C_(1)(0.7)^(4)(0.3)^(4)`

`5C_(4)(0.7)(0.3)^(4)`

`(0.7)^(4) (0.3)`

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