Section: Mathematics Usage

45) A drawer contains red socks, black socks, and white socks. What is the least number of socks that must be taken out of the drawer to be sure of having 4 pairs of matching socks.

8
9
10
11
This cannot be determined from the information given.
No Answer Selected

Explanation

If only 9 were picked out, it is possible to get 3 of each color. Thus the 10th is necessary to be sure of 4 pairs.