Question

There are 10 balls in a bag. 3 are red, 5 are white, 2 are blue....

There are 10 balls in a bag. 3 are red, 5 are white, 2 are blue. You are to randomly choose two balls, taking one out and then another without replacement.

What is the probability that you will get two red balls?

Homework Answers

Answer #1

There are 10 balls in a bag out of which 3 are red, 5 are white and 2 are blue.

2 balls are chosen randomly without replacement.

The probability that you will get two red balls is given by

P(2 red balls) = number of ways of selecting 2 red balls out of 3 red balls / number of ways of selecting 2 balls out of 10 balls

                      = 3C2 / 10C2

                      = 1 / 15

Therefore, the probability that you will get two red balls is 1/15.                        

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