loolooismail04 loolooismail04
  • 12-05-2020
  • Mathematics
contestada

What is C,?
06
O 35
O 210
O 5.040

What is C 06 O 35 O 210 O 5040 class=

Respuesta :

Chesna
Chesna Chesna
  • 14-08-2022

Answer:

35

Step-by-step explanation:

nCr = n! ÷ r!(n - r)!

7C3 = 7! ÷ 3!(7 - 3)!

n! = 7!

7! = 7 x 5 x 4 x 3 x 2 x 1

7! = 5,040

r! = 3!

3! = 3 x 2 x 1

3! = 6

(n - r)! = (7 - 3)!

(7 - 3)! = 4!

4! = 4 x 3 x 2 x 1

4! = 24

7C3 = 5,040 ÷ 6 x 24

7C3 = 5,040 ÷ 144

7C3 = 35

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