यदि \(A=\{1,2,3,4,5\}\) है तो (A) के अधिकतम दो अवयवों वाले उपसमुच्चयों की संख्या क्या है?
If \(A=\{1,2,3,4,5\}\) then what is the number of subsets of (A) having at most two elements?
Explanation opens after your attempt
C. (16)
Concept
At most two elements means (0,1,2) elements. The count is \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=1+5+10=16\).
Why this answer is correct
The correct answer is C. (16). At most two elements means (0,1,2) elements. The count is \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=1+5+10=16\).
Exam Tip
अधिकतम दो अवयव का अर्थ (0,1,2) अवयव हैं। संख्या \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=1+5+10=16\) है।
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