Question

The number of proper subsets of the set A = {a, b, c, d} is

• A. 8
• B. 7
• C. 6
• D. 5

Answer 1

The correct option is B

7

Given set is $A=\{a,b,c,d\}\Rightarrow n\left(A\right)=4$

Number of proper subsets of the set $=2^4-1=15$.