यदि \(A=\{2,4,6\}\) है तो (\mathcal{P}(A)) में कुल कितने उपसमुच्चय ({2,4}) को शामिल करेंगे?
If \(A=\{2,4,6\}\), how many subsets in (\mathcal{P}(A)) will include ({2,4})?
Explanation opens after your attempt
B. (2)
Concept
Keeping (2) and (4) is compulsory and (6) can be taken or not taken in (2) ways. So there are (2) such subsets.
Why this answer is correct
The correct answer is B. (2). Keeping (2) and (4) is compulsory and (6) can be taken or not taken in (2) ways. So there are (2) such subsets.
Exam Tip
(2) और (4) को रखना अनिवार्य है और (6) को लेने या न लेने के (2) तरीके हैं। इसलिए ऐसे (2) उपसमुच्चय हैं।
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