Question

Evaluate 9!/6!3! . A. 1 B. 84 C. 168

Answer 1

Answer:84

Step-by-step explanation:

Answer 2

Answer:

B

Step-by-step explanation:

Using the definition

n ! = n(n - 1)(n - 2).... × 3 × 2 × 1

Then

$\frac{9!}{6!3!}$

= $\frac{9(8)(7)(6)(5)(4)(3)(2)(1)}{6(5)(4)(3)(2)(1)3(2)(1)}$

Cancel 6(5)(4)(3)(2)(1) on numerator/ denominator, leaving

$\frac{9(8)(7)}{3(2)(1)}$

= $\frac{504}{6}$

= 84 → B