Question

Which of the following is a singleton set?

(A) { x:x is an integer and x2 = 16 }

(B) { x:x is an integer and x2 – 1 = 120 }

(C) { x:x is an integer and x2 = x }

(D) { x:x is an integer and 4x = 8 }​

Answer 1

Answer:

(B) and (D) are the singleton sets.

Step-by-step explanation:

For (B), Only one integer satisfy the condition, which is the number 11.

For (D), Only one integer satisfy the condition,

which is the number 2.