Question

Sasha is going to choose 4 kinds of fruit out of the 9 kinds available at the grocery store. In how many different ways can she do that?

Answer 1

9*8*7*6 = 3024

Answer 2

do u hv idea abt combination

Answer 3

9C4 = 9.8.7.6/1.2.3.4=126

Answer 4

nCr=n!/(r!*(n-r)!)