Question

A set A contains 3 elements and set B contains 4 elements. The minimum number of elements in $A\cap B$ is

• A. 3
• B. 4
• C. 0.0
• D. 7

Answer 1

The correct option is C 0.0

The relation between the number of elements in two sets A and B with $A\cap B$ is given by $0\le n(A\cap B)\le \mathrm{Min}\left\{n\right(A),n(B)\}.$Therefore, the minimum number of elements in $A\cap B$ is 0