Question

In how many ways can select 3 items from 10 items​

Answer 1

none of the above ways I think it will help you

Answer 2

Answer:

(c) 120 ways

Step-by-step explanation:

We can select 3 items from 10 items in 10 choose 3 ways.

n choose r = n! / [(n - r)! x r!]

10 choose 3 = 10! / (7! x 3!)

                    = 10 x 9 x 8 / (3 x 2 x 1)

                    = 120 ways

Hope this helps! :)