SOLUTION: A box contains a total of 50 textbooks, of which 10 are biology books. If you select 2 at random, determine the probability that neither is a biology book.

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Question 322921: A box contains a total of 50 textbooks, of which 10 are biology books. If you select 2 at random, determine the probability that neither is a biology book.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

P(1st not biology)=40%2F50=4%2F5
P(2nd not biology)=39%2F49
P(2 books not biology)=%284%2F5%29%2839%2F49%29=156%2F245