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
Correct Answer

C. (8)

Step 1

Concept

In a (4)-element set, each element appears in \(2^{3}=8\) subsets. Use symmetry.

Step 2

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.

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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?

Correct Answer: C. (8). Explanation: किसी (4) अवयव वाले समुच्चय में हर अवयव \(2^{3}=8\) उपसमुच्चयों में आता है। सममिति का उपयोग करें। / In a (4)-element set, each element appears in \(2^{3}=8\) subsets. Use symmetry.

Which concept should I revise for this Mathematics MCQ?

In a (4)-element set, each element appears in \(2^{3}=8\) subsets. Use symmetry.

What exam hint can help solve this Mathematics question?

किसी (4) अवयव वाले समुच्चय में हर अवयव \(2^{3}=8\) उपसमुच्चयों में आता है। सममिति का उपयोग करें।