42. यदि P(A), A का घात समुच्चय है और A शून्य समुच्चय है, तो P{P{P{P(A)}}} में कितने अवयव हैं? (NDA 2009) (a).0
(b) 1 (c) 4 (d) 16
Answers
Answer:
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Step-by-step explanation:
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Given : P(A), A का घात समुच्चय है और A शून्य समुच्चय है,
P(A) is power set of A
To Find : P{P{P{P(A)}}} में कितने अवयव हैं?
Number of elements in P{P{P{P(A)}}}
(a).0
(b) 1
(c) 4
(d) 16
Solution:
in n (A) = n
Then P(A) = 2ⁿ
A शून्य समुच्चय है,
A is null set
=> n(A) = 0
=> P (A) = 2⁰ = 1
P{P{P{P(A)}}} = P{P{P{1}}}
P(1) = 2¹ = 2
P{P{P{P(A)}}} = P{P{2}}
P(2) = 2² = 4
P{P{P{P(A)}}} = P{4}
P(2) = 2⁴ = 16
P{P{P{P(A)}}} = 16
P{P{P{P(A)}}} में 16 अवयव हैं?
Number of elements in P{P{P{P(A)}}} = 16
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