There are 10 pairs of basketball shoes

Question

There are 10 pairs of basketball shoes, 12 pairs of leather shoes, if you pick one shoe each time, how many picks do you need to guarantee that you get one pair of the same shoes.

Answer 1

25 picks guarantees at least one pair of shoes

10+12+1 = 25

It's possible to get 24 left shoes, but when you get 1 more shoe it has to be a right shoe that matches one of the 24 left shoes.