1.

The probability that a student is not a swimmer is 1/5 then the probabilitythat out of five student , four are swimmer is

Answer»

`"^5C_4(4/5)^4 (1/5)`
`(4/5)^4 (1/5)`
`"^5C_2(4/5)^4 (1/5)`
NONE of these

Answer :A


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