Exercise 2.20

Answers

(a): Since the second card is equally likely to be any of the remaining $3$ cards, the probability that both cards are queens is $\frac{1}{3}$ .
(b): Our sample space now consists of all order pairs of the two queens and the two jacks, where at least one card is a queen. Since all the outcomes are equally likely, the answer is $\frac{2}{10} = \frac{1}{5}$ .
(c): Now, the sample space consists of all order pairs of the two queens and the two jacks, where one of the cards is the Queen of Hearts. Thus, the answer is $\frac{2}{6} = \frac{1}{3}$ .

fifthist

2021-12-05 00:00