Question

3 bags each contains 3 red and 3 white balls.Find the probability of selecting 2 white balls from the same bag

Answer 1

Yeah so....

To take out the probability you need the total no. of outcome and favourable outcome.

So first we will take out the total no. of outcome

Now see, The question is saying that in 1 bag you have 3 red and 3 white balls
That means total no. of balls is 6 balls in 1 bag.

So, in 3 bags total no. of balls will be 3 × 6 = 18 balls.

Hence Total no. of outcome = 18

Now, favourable outcome is 2 white balls (Given in the question)

Hence probability = favourable outcome/ Total no. of outcome

= 2/18
= 1/9

DONE!