Question

I need help please and thank you

Answer 1

Answer:

15

Step-by-step explanation:

n is the number of people and k the number of chairs

here n = 6 and k = 4

note n! = n(n - 1)(n - 2).... × 3 × 2 × 1, thus

$\frac{6!}{4!(6 -4)!}$

= $\frac{6(5)(4)(3)(2)(1)}{4!(2!)}$

= $\frac{720}{4(3)(2)(1)2(1)}$

= $\frac{720}{24(2)}$

= $\frac{720}{48}$

= 15