CBSE (Arts) Class 11CBSE
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Solution - How Many Elements Has P(A), If a = φ? - CBSE (Arts) Class 11 - Mathematics

Question

How many elements has P(A), if A = Φ?

Solution

We know that if A is a set with m elements i.e., n(A) = m, then n[P(A)] = 2m.

If A = Φ, then n(A) = 0.

∴ n[P(A)] = 20 = 1

Hence, P(A) has one element.

  Is there an error in this question or solution?

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Reference Material

Solution for question: How Many Elements Has P(A), If a = φ? concept: Subsets. For the courses CBSE (Arts), CBSE (Science), CBSE (Commerce)
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