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 - 5x+6= 0
C. The collection of prime numbers between 1 and 100.
D. The collection of all beautiful women in Alwar.​

Answer 1

Answer:

b The collection of numbers which satisfy the equation x - 5x+6= 0