Question

Please I really need help​

Answer 1

n = 10

Explanation:

n! / 6!(n - 6)! = n! / 4!(n - 4)!

6!(n - 6)! = 4!(n - 4)!

6!(n - 6)! / 4!(n - 4)! = 1

6*5(n - 6)! / (n - 4)! = 1

30(n - 6)! = (n - 4)!

(10-6)! = 4 * 3 * 2 * 1 and

(10 -4)! = 6*5*4*3*2*1

Dividing (10-4)! / (10-6)! = 30

so n = 10.