यदि \(A=\{10,20,30,40\}\) और \(B=\{20,40,60\}\) है, तो \(A\cap B\) में कितने अवयव हैं?

If \(A=\{10,20,30,40\}\) and \(B=\{20,40,60\}\), how many elements are in \(A\cap B\)?

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

The common elements are (20) and (40), so the number is (2). In intersection, count only common elements.

Step 2

Why this answer is correct

The correct answer is B. (2). The common elements are (20) and (40), so the number is (2). In intersection, count only common elements.

Step 3

Exam Tip

सामान्य अवयव (20) और (40) हैं, इसलिए संख्या (2) है। प्रतिच्छेद में केवल समान अवयव गिने जाते हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{10,20,30,40\}\) और \(B=\{20,40,60\}\) है, तो \(A\cap B\) में कितने अवयव हैं? / If \(A=\{10,20,30,40\}\) and \(B=\{20,40,60\}\), how many elements are in \(A\cap B\)?

Correct Answer: B. (2). Explanation: सामान्य अवयव (20) और (40) हैं, इसलिए संख्या (2) है। प्रतिच्छेद में केवल समान अवयव गिने जाते हैं। / The common elements are (20) and (40), so the number is (2). In intersection, count only common elements.

Which concept should I revise for this Mathematics MCQ?

The common elements are (20) and (40), so the number is (2). In intersection, count only common elements.

What exam hint can help solve this Mathematics question?

सामान्य अवयव (20) और (40) हैं, इसलिए संख्या (2) है। प्रतिच्छेद में केवल समान अवयव गिने जाते हैं।