You have a box containing 10 black and 10 blue socks.what is the minimum number of times you need to pull out so that you have a pair of the same color?
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3 is the answer .
Let black socks be B and blue socks be D.
S={BBB,DDD,BBD,DDB}
Either of the outcomes would lead to get atleast one pair.
So,3 times is enough to pull a pair of the same colour.
Let black socks be B and blue socks be D.
S={BBB,DDD,BBD,DDB}
Either of the outcomes would lead to get atleast one pair.
So,3 times is enough to pull a pair of the same colour.
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