Question

If A = {2, 4 , 6}, then the universal set of A is ___________ .

• A. $\{x:x\in W\}$
• B. $\{x:x\in Z\}$
• C. $\{x:x\in N\}$
• D. None of the above.

Answer 1

Answer: (A), (B), (C)

The correct options are
A $\{x:x\in W\}$
B $\{x:x\in Z\}$
C $\{x:x\in N\}$

Universal set is the set which contains all the sets under consideration as it subsets.
The elements 2, 4, 6 belong to the set of whole numbers (W), integers (Z), and natural numbers (N). Hence, the first three options are correct.