Ques 1 Maths & Number theory quiz

Can you please explain this ques?

4 will be the answer
in the worst case
first 3 draws will fetch u socks of different colors
R , B , Y
then the 4th socks will surely make up a pair with either of the 3 socks

ok got it. Thanks fore your help😄

please mark your doubt as resolved :smile:

It isn’t marking as resolved I mailed it at coding blocks support.