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Answer : 1 3 Explanation : Answer: A) 3 Explanation: Given there are 2 coloured socks, which is black and White Let suppose 3 is choosen at random then three conditions arises 1. all are black2.all are white3. either it will have 2 black and 1 white or it will have 2 white and 1 black so in all the conditions as above mentioned we are getting atleast one pair of socks.So, he must take out 3 to be sure that he has a matching pair.

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