Question

There are 7 students in a class: 5 boys and 2 girls. If the teacher picks a group of 4 at random, what is the probability that everyone in the group is a boy?

Answer 1

Answer:

The probability that everyone in the group is a boy is given by

5

C

4

7

C

4

=

(

5

4

)

(

7

4

)

=

5

×

4

×

3

×

2

×

1

7

×

6

×

5

×

4

=

1

7

Mark as Brainlist please,

please