Mother, father and son line up at random for a family picture. If `A` and `B` are two events given by `A=` Son on one end, `B=` Father in the middle, find `P(A/B)` and `P(B/A)dot`

Explanation

A shows Son on one end


B shows Father in the middle

`
S={M F S, M S F, F S M, F M S, S M F, S F M}`

`
A={M F S, F M S, S M F, S F M}`

`
B={M F S, S F M}`


Then ,

`
A cap B={M F S, S F M}`

`
(i) P(A / B)=frac{n(A cap B)}{n(B)}=frac{2}{2}=1`

`
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