Question

Two cards are drawn successively with replacement from a well shuffled deck of 52 cards, then the meanof the number of aces is
A. `1//13`
B. `3//13`
C. `2//13`
D. none of these

Answer 1

Correct Answer - C
Let X denote the number of aces obtained in two draws, Then,X follows binomial distribution with `n=2`,
`p=(4)/(52)=(1)/(13)and q=(12)/(13)`
`therefore` Mean of number of aces `=np=(2)/(13)`.