Question

A bag contains 3 white and 6 black balls while another bag containg 6 white and 3 black balls. A bag is selected at random and a ball is drawn.

Answer 1

Answer:

The first bag has 3 white balls.

So, the probability of drawing a white ball from bag 1 is 3/9.

Similarly, the probability of drawing a white ball from bag 2 is 6/9.

But we have to find the probability of a white ball being drawn from the first bag.

Number of favorable outcomes = 3/9

Total outcomes = 3/9 + 6/9 = 9/9

Probability = 3/9 / 9/9 = 3/9