Question

a bag consists 27 balls of which some are white and others are red.A ball is picked at random. if the probability of getting a red ball is 2/3,find the no. of white balls.

Answer 1

Let the no. of red balls be x.
Total no. of balls= 27
P(getting a red ball)= x/total no. of balls
=x/27
2/3= x/27
x=2/3*27
x=18
Therefore no. of white balls= 27-18
=9
Hope it helps you.

Answer 2

Hi friend, Here's the required answer:-
Total number of balls-27 balls
Probability of getting a red ball-2/3
Therefore the number of red balls=2/3×27=18 balls
Probability of getting a white ball=1/3
So, the number of white balls=1/3×27=9 balls.
Hope this helped u...
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