Question

Nitin has 54 marbles which are white, blue and black. The ratio of white, blue and black marbles is

3: 1: 2. Find the probability of a marble which is not white.​

Answer 1

Step-by-step explanation:

let the no. of marbles in ratio be x, then

3x+1x+2x=54

6x=54

x=54/6=9

3x=9×3=27(white)

2x=9×2=18(blue)

1x=9×1=9(black)

probability of not white=no.of blue +black/total no.

18+9/54

27/54

1/7