यदि \(A=\{0,1,2,3\}\) है तो (A) के सभी उपसमुच्चयों में कुल कितनी बार अवयव (0) आएगा?
If \(A=\{0,1,2,3\}\) then in all subsets of (A), how many times will the element (0) appear in total?
Explanation opens after your attempt
C. (8)
Concept
In a (4)-element set, each element appears in \(2^{3}=8\) subsets. Use symmetry.
Why this answer is correct
The correct answer is C. (8). In a (4)-element set, each element appears in \(2^{3}=8\) subsets. Use symmetry.
Exam Tip
किसी (4) अवयव वाले समुच्चय में हर अवयव \(2^{3}=8\) उपसमुच्चयों में आता है। सममिति का उपयोग करें।
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