CMAT 2020 - Reasoning Question 7
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Reasoning
There are 30 red gloves and 10 green gloves, so he needs to take atleast two socks, to get a pair, now there can be one sock of each
colour, so to be definite sure about a matching pair, he should once again pull out a sock, and the resulting sock will definitely match with either of the earlier ones, and he will get a pair.
Thus, he needs to take 3 to be sure for a matching pair.