यदि \(A=\{1,2,3,4,5\}\), तो (P(A)) के कितने अवयवों में ठीक (3) अवयव होंगे?
If \(A=\{1,2,3,4,5\}\), how many elements of (P(A)) have exactly (3) elements?
Explanation opens after your attempt
B. (10)
Concept
Subsets with exactly (3) elements are \(\binom{5}{3}=10\). Use combinations for size-based counting in a power set.
Why this answer is correct
The correct answer is B. (10). Subsets with exactly (3) elements are \(\binom{5}{3}=10\). Use combinations for size-based counting in a power set.
Exam Tip
ठीक (3) अवयव वाले उपसमुच्चय \(\binom{5}{3}=10\) होते हैं। पावर सेट में आकार आधारित गिनती के लिए संयोजन लगाएं।
Login to save your score, XP, coins and progress.
