Question

If $A=\{1,2,3,4\}$, then number of subsets of A is

• A. 2
• B. 1
• C. 8
• D. None of these.

Answer 1

The correct option is D None of these.

Given $A=\{1,2,3,4\}$

So the number of elements in $A$ is $n\left(A\right)=4$

Number of subsets of $A$ is $2^{n\left(A\right)}=2^4=16$