यदि \(A=\{1,2,3,4,5\}\), तो (P(A)) के कितने अवयवों में अधिकतम (2) अवयव होंगे?
If \(A=\{1,2,3,4,5\}\), how many elements of (P(A)) have at most (2) elements?
Explanation opens after your attempt
C. (16)
Concept
Subsets with at most (2) elements are \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=1+5+10=16\). For at most, add all smaller sizes.
Why this answer is correct
The correct answer is C. (16). Subsets with at most (2) elements are \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=1+5+10=16\). For at most, add all smaller sizes.
Exam Tip
अधिकतम (2) अवयव वाले उपसमुच्चय \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=1+5+10=16\) हैं। अधिकतम में सभी छोटे आकार जोड़ें।
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