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  • 18-05-2022
  • Mathematics
contestada

Which of the following expressions would give the number of ways to choose a group of 7 from a group
of 15?
151!/7!8!
7!/15!8!
7!15!7!

Respuesta :

mhanifa
mhanifa mhanifa
  • 31-05-2022

Answer:

  • A)  15!/(7!8!)

Step-by-step explanation:

We are looking for the combination of 7 out of 15.

This is written as

  • 15C7

This is calculated as

  • 15!/(7!(15-7)! = 15!/(7!8!)

Correct choice is A

Answer Link

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