यदि \(A=\{1,2,3,4,5\}\) और \(B=\{2,3,4,5,6,7\}\) हैं, तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें (a+b) अभाज्य और (a<b) है?

If \(A=\{1,2,3,4,5\}\) and \(B=\{2,3,4,5,6,7\}\), how many pairs ((a,b)) in \(A\times B\) have (a+b) prime and (a<b)?

Explanation opens after your attempt
Correct Answer

B. (8)

Step 1

Concept

Applying both conditions gives (8) pairs. First filter by (a<b), then test prime sums.

Step 2

Why this answer is correct

The correct answer is B. (8). Applying both conditions gives (8) pairs. First filter by (a<b), then test prime sums.

Step 3

Exam Tip

दोनों शर्तें लगाने पर (8) युग्म मिलते हैं। पहले (a<b) से छाँटें और फिर अभाज्य योग जाँचें।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3,4,5\}\) और \(B=\{2,3,4,5,6,7\}\) हैं, तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें (a+b) अभाज्य और (a<b) है? / If \(A=\{1,2,3,4,5\}\) and \(B=\{2,3,4,5,6,7\}\), how many pairs ((a,b)) in \(A\times B\) have (a+b) prime and (a<b)?

Correct Answer: B. (8). Explanation: दोनों शर्तें लगाने पर (8) युग्म मिलते हैं। पहले (a<b) से छाँटें और फिर अभाज्य योग जाँचें। / Applying both conditions gives (8) pairs. First filter by (a<b), then test prime sums.

Which concept should I revise for this Mathematics MCQ?

Applying both conditions gives (8) pairs. First filter by (a<b), then test prime sums.

What exam hint can help solve this Mathematics question?

दोनों शर्तें लगाने पर (8) युग्म मिलते हैं। पहले (a<b) से छाँटें और फिर अभाज्य योग जाँचें।