Question

Of five letters (A, B, C, D, and E), two letters are to be selected at random. How many possible are possible

Answer 1

10

Explanation:

5C2 =5!

2! (3)!

=1 x 2 x 3 x 4 x 5

(1 x 2) (1 x 2 x 3)

=4 x 5

2

=20

2

5C2 = 10