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

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

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

({1}) is one element and (2) is another element. Therefore (A) has (2) elements.

Step 2

Why this answer is correct

The correct answer is B. (2). ({1}) is one element and (2) is another element. Therefore (A) has (2) elements.

Step 3

Exam Tip

({1}) एक तत्व है और (2) दूसरा तत्व है। इसलिए (A) में कुल (2) तत्व हैं।

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Mathematics Answer, Explanation and Revision Hints

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

Correct Answer: B. (2). Explanation: ({1}) एक तत्व है और (2) दूसरा तत्व है। इसलिए (A) में कुल (2) तत्व हैं। / ({1}) is one element and (2) is another element. Therefore (A) has (2) elements.

Which concept should I revise for this Mathematics MCQ?

({1}) is one element and (2) is another element. Therefore (A) has (2) elements.

What exam hint can help solve this Mathematics question?

({1}) एक तत्व है और (2) दूसरा तत्व है। इसलिए (A) में कुल (2) तत्व हैं।