Question

14. Out of the 5 boys and 2 girls, a committee
of 3 is to be formed. In how many ways can
it be formed if at least one girl is to be
included?
a) 20
b) 25
d) 60
c) 32​

Answer 1

Answer:

Correct option is

B

25

We may have:

(i) 1 woman and 2 men or (ii) 2 women and 1 man.

∴ required number of ways=(

2

C

1

×

5

C

2

)+(

2

C

2

×

5

C

1

)=(2×

2×1

5×4

)+(1×5)

=(20+5)=25.

Answer 2

Answer:

b

Step-by-step explanation: