यदि \(A=\{1,2,3\}\) और \(B=\{3,4,5\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि (y-x=2)?

If \(A=\{1,2,3\}\) and \(B=\{3,4,5\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (y-x=2)?

Explanation opens after your attempt
Correct Answer

A. (3)

Step 1

Concept

The valid pairs are ((1,3),(2,4),(3,5)). In such conditions, choose (x) first and then find (y).

Step 2

Why this answer is correct

The correct answer is A. (3). The valid pairs are ((1,3),(2,4),(3,5)). In such conditions, choose (x) first and then find (y).

Step 3

Exam Tip

सही युग्म ((1,3),(2,4),(3,5)) हैं। ऐसी शर्तों में पहले (x) चुनकर (y) निकालना आसान है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3\}\) और \(B=\{3,4,5\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि (y-x=2)? / If \(A=\{1,2,3\}\) and \(B=\{3,4,5\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (y-x=2)?

Correct Answer: A. (3). Explanation: सही युग्म ((1,3),(2,4),(3,5)) हैं। ऐसी शर्तों में पहले (x) चुनकर (y) निकालना आसान है। / The valid pairs are ((1,3),(2,4),(3,5)). In such conditions, choose (x) first and then find (y).

Which concept should I revise for this Mathematics MCQ?

The valid pairs are ((1,3),(2,4),(3,5)). In such conditions, choose (x) first and then find (y).

What exam hint can help solve this Mathematics question?

सही युग्म ((1,3),(2,4),(3,5)) हैं। ऐसी शर्तों में पहले (x) चुनकर (y) निकालना आसान है।