a man wears socks of two colours black and brown colours he has together 20 black socks and 20 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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Answer:
21
Step-by-step explanation:
if he takes out the first sock he has to take out maximum 21 socks or minimum whatever he can be sure because the 21st socks is obviously gonna be a different colour
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