A pair of dice is thrown 5 times. If getting a doublet is considered a success, find the probability of 2 success.

Answer

N/a

Explanation

Here `n=4`
`p=` probability of getting doublet on a pair of dice `=1/6`
`:.q=1-1/6=5/6`
probability of 2 success
`P(X=2)=.^(4)C_(2).p^(2).q^(4-2)`
`=6xx(1/6)^(2)(5/6)^(2)=25/216`