Question

check whether 7c3= 7c4​

Answer 1

Step-by-step explanation:

Explanation:

We may have (3 men and 2 women) or (4 men and 1 woman) or (5 men only).

Required number of ways = (7C3 x 6C2) + (7C4 x 6C1) + (7C5)

= 7 x 6 x 5 x 6 x 5 + (7C3 x 6C1) + (7C2)

3 x 2 x 1 2 x 1

= 525 + 7 x 6 x 5 x 6 + 7 x 6

3 x 2 x 1 2 x 1

= (525 + 210 + 21)

= 756.