2 boys and 2 girls are in room P and 1 boy 3 girls are in room Q. Write the same space for the experiment in Which a room is selected and then a person

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Solution

Total number of room =2

$\begin{matrix} R o o m & B o y s & G i r l s P & 2 & 3 Q & 1 & 3 \end{matrix}$

Selecting a particular room can be done in 2 ways

Selecting a person from a particular room can be done in
P - 4, Q - 4

Elements in sample space ar\e

{(P, Boy 1); (P. Boy 2); (P. Girl 1),
(P, Girl 2); (Q, Boy 3); (Q, Girl 3),
(P. Girl 4); (Q, Girl 5)}

So number of elements in required sample space is 8

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