Assume that you have a drawer that contains 19 black socks and 13 blue socks. What is the minimum number of socks that you must take from the drawer to insure that you have a matching pair? The answer is 3 socks. Most people have difficulty determining the answer because
A)they are distracted by irrelevant information
B)of the belief bias
C)they fail to apply deductive rules to new situations
D)of a conflict with the availability heuristic

Question

Quizplus · Accepted Answer

The irrelevant information in this question is the specific numbers of black and blue socks. The key to solving the problem is realizing that after picking one black and one blue sock, the next sock will always match one of the previously picked socks, regardless of its color.

Assume That You Have a Drawer That Contains 19 Black