Question

There are three boys and two girls. a committee of two is to be formed. find the probability of event that the committee contains (a) at least one girl and (b) only boys

Answer 1

Sample Space = { B1B2, B1B3, B1G1, B1G2, B2B3, B2G1, B2G2, B3G1, B3G2, G1G2}
a. Let A = Event of forming a committee which contains atleast one girl
A = { B1G1, B1G2, B2G1, B2G2, B3G1, B3G2, G1G2}
n(A) = 7b. Let C = Event that the committee contains only boys.
C = { B1B2, B1B3, B2B3}
∴ n(C) = 3

Answer 2

Step-by-step explanation:

p of A is 7/10 and 2nd is 1/5