Question

In which of the following cases the intersection of sets become a singleton set?

• A. C = {x: x is a natural number}, D = {y: y is a whole number}
• B. C = {x: x is a prime number}, D = {y: y is an even number}
• C. C = {x: x is an odd number}, D = {y: y is a prime number}
• D. None of these

Answer 1

The correct option is B C = {x: x is a prime number}, D = {y: y is an even number}

Option A: C∩D = {k : k is a natural number}
Option B: C∩D = {2}
Option C: C∩D = { }
So, option B is correct.