CA Foundation P3 · Chapter 7 · Question 1 of 9
The number of proper subsets of the set A = {1, 2, 3, 4} is:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) 15
Explanation
A set with n elements has 2ⁿ subsets. Here 2⁴ = 16. Excluding the set itself, the number of proper subsets is 16 − 1 = 15.