A college library has five copies of a certain text on reserve. Two copies (1 an

Question

A college library has five copies of a certain text on reserve. Two copies (1 and 2) are first printings, and the other three (3, 4, and 5) are second printings. A student examines these books in random order, stopping only when a second printing has been selected. One possible outcome is 5, and another is 213. (Enter your answers as a comma-separated list. Enter phi for the empty set.) List the outcomes in S. S = {} Let A denote the event that exactly one book must be examined. What outcomes are in A? A = {} Let B be the event that book 5 is the one selected. What outcomes are in B? B = {} Let C be the event that book 1 is not examined. What outcomes are in C? C = {}

Explanation / Answer

first printings are 1,2 and secong printings are 3,4,5

a)possible outcomes are 123,124,125,213,214,215,13,14,15,23,24,25,3,4,5

b)if only one book to be examined possible outcomes are 3,4,5

c)possible outcomes for book 5 to be selected are 5,15,25,125,215

d)Possible outcomes if book 1 is not examined are 23,24,25,3,4,5

mistake you are doing is you are not seperating oucomes with coma .you are adding coming within outcome.check it

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