<PRE><B>Question 441255</B>
Mary has 30 hats. She has 5 green, 7 blue, 12 red, and 6 brown. If she selects two hats at random, what is the probability that both hats are different colors? Round your answer to two decimal places. 
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Ans: 1 - P(hats are same color)
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= 1 - [5C2 + 7C2 + 12C2 + 6C2]/30C2
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= 1 - [112/435]
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= 323/435
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=0.743
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Cheers,
Stan H.
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