यदि \(A=\{{1},2\}\) है तो (n(\mathcal{P}(A))) कितना होगा?

If \(A=\{{1},2\}\), what is (n(\mathcal{P}(A)))?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

Set (A) has two elements so its power set has \(2^2=4\) elements. Count elements carefully using brackets.

Step 2

Why this answer is correct

The correct answer is C. (4). Set (A) has two elements so its power set has \(2^2=4\) elements. Count elements carefully using brackets.

Step 3

Exam Tip

(A) में दो तत्व हैं इसलिए घात समुच्चय में \(2^2=4\) तत्व होंगे। अंदर के कोष्ठकों को देखकर तत्व गिनें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{{1},2\}\) है तो (n(\mathcal{P}(A))) कितना होगा? / If \(A=\{{1},2\}\), what is (n(\mathcal{P}(A)))?

Correct Answer: C. (4). Explanation: (A) में दो तत्व हैं इसलिए घात समुच्चय में \(2^2=4\) तत्व होंगे। अंदर के कोष्ठकों को देखकर तत्व गिनें। / Set (A) has two elements so its power set has \(2^2=4\) elements. Count elements carefully using brackets.

Which concept should I revise for this Mathematics MCQ?

Set (A) has two elements so its power set has \(2^2=4\) elements. Count elements carefully using brackets.

What exam hint can help solve this Mathematics question?

(A) में दो तत्व हैं इसलिए घात समुच्चय में \(2^2=4\) तत्व होंगे। अंदर के कोष्ठकों को देखकर तत्व गिनें।