यदि \(A=\{a,b\}\) है तो (\mathcal{P}(A)) के कितने तत्व होंगे?
If \(A=\{a,b\}\) then how many elements will (\mathcal{P}(A)) have?
Explanation opens after your attempt
Correct Answer
C. (4)
Concept
A set with two elements has \(2^2=4\) subsets. In exams the number of elements in a power set is \(2^n\).
Why this answer is correct
The correct answer is C. (4). A set with two elements has \(2^2=4\) subsets. In exams the number of elements in a power set is \(2^n\).
Exam Tip
दो तत्वों वाले समुच्चय के \(2^2=4\) उपसमुच्चय होते हैं। परीक्षा में घात समुच्चय के तत्वों की संख्या \(2^n\) होती है।
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