Respuesta :

Answer:

[tex]64 \times 63fctorial \\ = 64 \times (1 \times 2 \times .......63) \\ = 1 \times 2 \times .......63 \times 64 \\ = 64factorial \\ thank \: you[/tex]

Answer:

64!

Step-by-step explanation:

n * (n-1)! = n!

64 * 63! = 64 * (64-1)! = 64!