SOLUTION: Sam has 17 ties. He has 6 green, 3 blue and 8 red. If he selects two ties at random, what is the probability that both ties are different colors? Round your answer to two dec
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Question 375316: Sam has 17 ties. He has 6 green, 3 blue and 8 red. If he selects two ties at random, what is the probability that both ties are different colors? Round your answer to two decimal places.
Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!
total no. of ways to select two ties from 17 = 17C2 = 136
no. of ways when same color = 6C2 + 3C2 + 8C2 = 15 + 3 + 28 = 46
probability of same color = 46/136
now, probability of different color = 1 - 46/136 = 90/136
required probability = 0.661
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