यदि \(A=\{1,2,3,4\}\) और \(B=\{1,2,3,4\}\), तो \(A\times B\) में (a) और (b) दोनों अभाज्य होने वाले युग्मों की संख्या कितनी है?

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

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

The prime elements in each set are (2,3). Hence \(2\cdot2=4\) pairs are formed.

Step 2

Why this answer is correct

The correct answer is B. (4). The prime elements in each set are (2,3). Hence \(2\cdot2=4\) pairs are formed.

Step 3

Exam Tip

प्रत्येक समुच्चय में अभाज्य तत्व (2,3) हैं। इसलिए \(2\cdot2=4\) युग्म बनेंगे।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3,4\}\) और \(B=\{1,2,3,4\}\), तो \(A\times B\) में (a) और (b) दोनों अभाज्य होने वाले युग्मों की संख्या कितनी है? / If \(A=\{1,2,3,4\}\) and \(B=\{1,2,3,4\}\), how many pairs in \(A\times B\) have both (a) and (b) prime?

Correct Answer: B. (4). Explanation: प्रत्येक समुच्चय में अभाज्य तत्व (2,3) हैं। इसलिए \(2\cdot2=4\) युग्म बनेंगे। / The prime elements in each set are (2,3). Hence \(2\cdot2=4\) pairs are formed.

Which concept should I revise for this Mathematics MCQ?

The prime elements in each set are (2,3). Hence \(2\cdot2=4\) pairs are formed.

What exam hint can help solve this Mathematics question?

प्रत्येक समुच्चय में अभाज्य तत्व (2,3) हैं। इसलिए \(2\cdot2=4\) युग्म बनेंगे।