SOLUTION: Please help:
A box contains a total of 50 textbooks, of which 10 are biology books. If you select 2 at random, determine the probability that:
1. Neither is a biology book
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A box contains a total of 50 textbooks, of which 10 are biology books. If you select 2 at random, determine the probability that:
1. Neither is a biology book
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Question 1101160: Please help:
A box contains a total of 50 textbooks, of which 10 are biology books. If you select 2 at random, determine the probability that:
1. Neither is a biology book
2. At least one of the textbooks is a biology book Answer by Edwin McCravy(20064) (Show Source):
2. At least one of the textbooks is a biology book
That is the complement event of #1. For if it is not true
that neither is a biology book, then at least one of them
must be a biology book. So we just subtract from 1:
