यदि \(A=\{1,2,3,4\}\), तो (\mathcal{P}(A)) के कितने तत्वों में (1) और (2) में से ठीक एक होगा?
If \(A=\{1,2,3,4\}\), how many elements of (\mathcal{P}(A)) contain exactly one of (1) and (2)?
Explanation opens after your attempt
C. (8)
Concept
There are (2) ways to choose exactly one of (1,2). The remaining (3,4) give \(2^2\) choices, so total (8).
Why this answer is correct
The correct answer is C. (8). There are (2) ways to choose exactly one of (1,2). The remaining (3,4) give \(2^2\) choices, so total (8).
Exam Tip
(1,2) में से ठीक एक चुनने के (2) तरीके हैं। शेष (3,4) के लिए \(2^2\) तरीके, इसलिए कुल (8) हैं।
Login to save your score, XP, coins and progress.
