Question

To select a group, an unbiased dice is rolled out. If the dice shows 1 then group x is chosen. If 2 or 3 is shown, group y is chosen and if 4, 5 or 6 is shown, group z is chosen. Group x has 3 girls and 2 boys, group y has 3 girls and 4 boys, and group z has 4 girls and 5 boys. The dice is rolled out and the group is chosen, if a girl is chosen then find the probability that is it chosen from group y.

• A. $\frac {90}{293}$
• B. $\frac {63}{293}$
• C. $\frac {7}{90}$
• D. None

Answer 1

Answer: (A)

$\frac {90}{293}$

Answer 2

The correct option is (A): $\frac {90}{293}$.