यदि \(A=\{3,6,9,12\}\) है, तो (\mathcal{P}(A)) में कितने अरिक्त तत्व होंगे?

If \(A=\{3,6,9,12\}\), how many non-empty elements are there in (\mathcal{P}(A))?

Explanation opens after your attempt
Correct Answer

B. (15)

Step 1

Concept

Total subsets are \(2^4=16\). Only \(\varnothing\) is empty so there are (15) non-empty subsets.

Step 2

Why this answer is correct

The correct answer is B. (15). Total subsets are \(2^4=16\). Only \(\varnothing\) is empty so there are (15) non-empty subsets.

Step 3

Exam Tip

कुल उपसमुच्चय \(2^4=16\) हैं। केवल \(\varnothing\) रिक्त है इसलिए अरिक्त उपसमुच्चय (15) होंगे।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{3,6,9,12\}\) है, तो (\mathcal{P}(A)) में कितने अरिक्त तत्व होंगे? / If \(A=\{3,6,9,12\}\), how many non-empty elements are there in (\mathcal{P}(A))?

Correct Answer: B. (15). Explanation: कुल उपसमुच्चय \(2^4=16\) हैं। केवल \(\varnothing\) रिक्त है इसलिए अरिक्त उपसमुच्चय (15) होंगे। / Total subsets are \(2^4=16\). Only \(\varnothing\) is empty so there are (15) non-empty subsets.

Which concept should I revise for this Mathematics MCQ?

Total subsets are \(2^4=16\). Only \(\varnothing\) is empty so there are (15) non-empty subsets.

What exam hint can help solve this Mathematics question?

कुल उपसमुच्चय \(2^4=16\) हैं। केवल \(\varnothing\) रिक्त है इसलिए अरिक्त उपसमुच्चय (15) होंगे।