If A, B and C are three sets such that A B = A C and A B = A C, then

JEE Main 2009 Mathematics question

If A, B and C are three sets such that and , then

Answer: (3)

Let . If , then , so . If , then \in$

Create a free account to read the complete working, and practise questions like this in a timed test.

Question ID VK-039183