A and B are any two non-empty sets and A is a proper subset of B. If n(A)=5, then the minimum possible value of n(A B)

JEE Main Mathematics question

and are any two non-empty sets and is a proper subset of . If , then the minimum possible value of

Answer: (A)

, which has at least one element. The minimum 1 occurs when .

Question ID VK-003144