Evaluate 7P4

Evaluate 12C5

Below.

Step-by-step explanation:

7P4

= 7! / (7-4) !

= 7*6*5*4*3*2*1 / (3*2*1)

= 7*6*5*4

= 840.

12C5

= 12! / (12-5) ! 5!

= 12*11*10*9*8*7*6*5*4*3*2*1 / (7*6*5*4*3*2*1 * 5*4*3*2*1)

= 12*11*10*9*8 / 5*4*3*2*1

= 792.