1.

Number of X is randomly selected from the set of odd numbers and Y is randomly selected from the set of even numbers of the set {1,2,3,4,5,6,7}. Let Z = X + Y, then What is P(Z gt 11) equal to?

Answer»

<P>0
`1//4`
`1//6`
`1//12`

Solution :`Z GT 11` is only possible when x=7 and y=6
`P( gt 11)=(n(E_(3)))/(n(S))=(1)/(12)`


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