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प्रश्न
When A = Φ, then number of elements in P(A) is ______.
रिक्त स्थान भरें
उत्तर
When A = Φ, then number of elements in P(A) is 1.
Explanation:
Given: A = ϕ
To find: n[P(A)]
A = ϕ
⇒ n(A) = 0
P(A) is a power set and number of elements in power set is 2x where x is number of elements in set A
Therefore,
n[P(A)] = 20
= 1
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