Respuesta :

mathstudent55

Answer:

42

Step-by-step explanation:

[tex] _aP_b = \dfrac{a!}{(a - b)!} [/tex]

[tex] _7P_2 = \dfrac{7!}{(7 - 2)!} [/tex]

[tex] _7P_2 = \dfrac{7 \times 6 \times 5!}{5!} [/tex]

[tex] _7P_2 = 7 \times 6 [/tex]

[tex] _7P_2 = 42 [/tex]