A man wears socks of two colours - Black and White. He has altogether 30 black socks and 10 brown socks in a drawer. Supposing he has to take out the socks in the dark, how many must he take out to be sure that he has a matching pair ?
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MT 1 : Logic in Logical and Verbal Reasoning
25 Qs . 25 Marks . 15 Mins
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