The total number of pairs of socks in the drawer is 10 (2 blue + 4 white + 4 black).
The probability of picking out a white pair is 4/10 = 2/5.
The probability of picking out a blue pair is 2/10 = 1/5.
Since you are replacing each pair after you pick, the probability of picking out a white or blue pair is the sum of the probabilities of picking out a white pair and a blue pair:
2/5 + 1/5 = 3/5.
So, the probability of picking out a white or blue pair from the sock drawer is 3/5.
A sock drawer has 2 blue pairs, 4 white pairs, 4 black pairs. What is the probability you will pick out a white pair or blue pair you replace each pair after you pick
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