Consider the following in respect of sets A and B : 1. (A-B) B=A 2. (A-B) A=A 3. (A-B) B= 4. A B A B=B Which of the above are correct?

NDA 2017 Mathematics question

Consider the following in respect of sets A and B : 1. 2. 3. 4. Which of the above are correct?

Answer: (B)

1: , which equals only when ; not correct in general. 2: , so ;

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

Question ID VK-028594