यदि \(A=\{1,2,3\}\) है तो (\mathcal{P}(A)) में तीन तत्वों वाले कितने उपसमुच्चय होंगे?
If \(A=\{1,2,3\}\), how many three-element subsets will be in (\mathcal{P}(A))?
Explanation opens after your attempt
Correct Answer
B. (1)
Concept
There is only one three-element subset which is (A) itself. The whole set is also an element of the power set.
Why this answer is correct
The correct answer is B. (1). There is only one three-element subset which is (A) itself. The whole set is also an element of the power set.
Exam Tip
तीन तत्वों वाला एक ही उपसमुच्चय (A) स्वयं है। पूरा समुच्चय भी घात समुच्चय का तत्व होता है।
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