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Assume that there are 3 different issues of Newsweek magazine, 4 different issues of Time, and...

Assume that there are 3 different issues of Newsweek magazine, 4 different issues of Time, and 2 different issues of Popular Science, including the December 1st issue, on a rack. You choose 4 of them at random. (1) What is the probability that you choose 1 issue of Newsweek and 3 issues of Time? equation editorEquation Editor (2) What is the probability that you choose at least 3 of the Time magazines?

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Answer #1

Q1) Probability that we choose 1 issue of Newsweek and 3 issues of Time is computed here as:

= Total ways to choose 1 issue of Newsweek from 3 issues of Newsweek * Number of ways to choose 3 issues of time from 4 issues of Time / Total ways to choose 4 issues from total 9 issues

Therefore 0.0952 is the required probability here.

Q2) The probability that we choose at least 3 of the Time magazines is computed here as:

= Probability that 3 time magazines are chosen + Probability that all 4 Time magazines are chosen

Therefore 1/6 = 0.1667 is the required probability here.

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