Question

Assume that the box contains 11 balls: 1 red, 4 green, and 6 blue. Two balls are drawn at random, one after the other without replacement.

Answer 1

Is there a specific question?

Answer 2

The first draw will be from 11 balls, the second draw will be out of 10 balls (since there is no replacement).

Keep that in mind for computing probabilities.

Answer 3

Oh what is the probability that the first ball was blue, given that the second was red?

Answer 4

blue= 6/11=55%
red= 1/10= 10%