In how many ways can 3 singers be selected from 5 who came to an audition? . a. 1. b. 10. c. 5. d. 60

B. 10

Step-by-step explanation:

Given: The total number of singers who came to an audition= 5

The number of singers need to be selected = 3

The number of ways to select 3 singers from 5 singers is given by using combinations as :-

Hence, the number of ways to select 3 singers from 5 singers who came to an audition is 10.

Let the length of equal sides be x cm. Perimeter = x cm + x cm + Base = 4 2/15 cm 2x + 4/3 = 62/15 On transposing 4/3 to R.H.S, we obtain 2x = 62/15 - 4/3 2x = 62 - 4 x 5/15 = 62 - 20/15 2x = 42/15 On dividing both sides by 2, we obtain 2x/2 = 42/15 x1/2 x = 7/5 = 1 2/5 Therefore, the length of equal sides is 1 2/5 c m.