Question

Solve the expression 7^P 2 (P = permutation)

42


2,640


120


5,040

Answer 1

Answer:

42

Step-by-step explanation:

$_aP_b = \dfrac{a!}{(a - b)!}$

$_7P_2 = \dfrac{7!}{(7 - 2)!}$

$_7P_2 = \dfrac{7 \times 6 \times 5!}{5!}$

$_7P_2 = 7 \times 6$

$_7P_2 = 42$