Exercise 2.4

1.

In the urn example, find the probability of getting 2 redballs and one blue ball.

2.

In the urn example, find the probability of getting the first two balls red.

3.

In the urn example, suppose we darw 4 balls without replacement. Now find the probability that all 4 balls are of the same color.

4.

Use a tree diagram to determine the probability of getting three red cards, when three cards are dealt (without replacement) from a well shuffled standard deck of 52 cards.

5.

Six cards with the numbers 1 through 6 on them are well shuffled and two cards are dealt (without replacment). Use a tree diagram to determine the probability of that the sum of the numbers on the two cards is 7.

6.

In the urn example, find the probability of getting 2 redballs and one blue ball.