Question

A set containing n elements, has exactly ..... subsets.
1. n²
2. 2ⁿ
3. n
4. n + 1

Answer 1

Correct Answer - Option 2 : 2ⁿ

Concept:

If a set containing n elements then number of elements in their subset = 2ⁿ

• For a given set A, a set B is a subset of set A if all elements of set B are also elements of set A. Set A is called the super-set of set B.
• Null set "{}" or "ϕ" is a subset of all sets.