Question

Which of the following collections is not a set?

• A. The collection of natural numbers between 2 and 20
• B. The collection of numbers which satisfy the equation $x^2-5x+6$
• C. The collection of prime numbers between 1 and 100
• D. The collection of all brilliant students in a class

Answer 1

Answer: (D)

The collection of all brilliant students in a class

Answer 2

The correct option is (D): The collection of all brilliant students in a class