A man wears socks of two colours - Black and brown. He has altogether $20$ black socks and $20$ brown socks in a drawer. Supposing he has to take out of the socks in the dark, how many must he take out to be sure that he has a matching pair?

3

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20

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39

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None of these

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Solution

The correct option is D $3$
Since there are socks of only two colours, so two out of any three socks must always be of the same colour.

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A man wears socks of two colours - Black and brown. He has altogether 20 black socks and 20 brown socks in a drawer. Supposing he has to take out of the socks in the dark, how many must he take out to be sure that he has a matching pair?

The correct option is D 3Since there are socks of only two colours, so two out of any three socks must always be of the same colour.

A man wears socks of two colours - Black and brown. He has altogether $20$ black socks and $20$ brown socks in a drawer. Supposing he has to take out of the socks in the dark, how many must he take out to be sure that he has a matching pair?

The correct option is D $3$
Since there are socks of only two colours, so two out of any three socks must always be of the same colour.