Question

1. From 6 boys and 4 girls, 5 are to be
selected for admission for a particular
course. In how many ways can this be
done if there must be exactly 2 girls?
a) 110
b) 120
c) 220
d) 210​

Answer 1

Answer:

120

from 4 girls we need to pick 2

so. 4c2

and from boys

out of 6 we need to pick up 3

so 6c3

both has to be done

6c3*4c2

20*6=120