यदि \(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a\neq b\}\), तो (R) में कितने ordered pairs हैं?

On \(A=\{1,2,3,4\}\), how many ordered pairs are in \(R=\{(a,b):a\neq b\}\)?

Explanation opens after your attempt
Correct Answer

C. (12)

Step 1

Concept

There are (16) pairs in \(A\times A\), and (4) pairs with (a=b) are removed. Hence (16-4=12) pairs remain.

Step 2

Why this answer is correct

The correct answer is C. (12). There are (16) pairs in \(A\times A\), and (4) pairs with (a=b) are removed. Hence (16-4=12) pairs remain.

Step 3

Exam Tip

\(A\times A\) में (16) युग्म हैं और (a=b) वाले (4) युग्म हटते हैं। इसलिए (16-4=12) pairs रहेंगे।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a\neq b\}\), तो (R) में कितने ordered pairs हैं? / On \(A=\{1,2,3,4\}\), how many ordered pairs are in \(R=\{(a,b):a\neq b\}\)?

Correct Answer: C. (12). Explanation: \(A\times A\) में (16) युग्म हैं और (a=b) वाले (4) युग्म हटते हैं। इसलिए (16-4=12) pairs रहेंगे। / There are (16) pairs in \(A\times A\), and (4) pairs with (a=b) are removed. Hence (16-4=12) pairs remain.

Which concept should I revise for this Mathematics MCQ?

There are (16) pairs in \(A\times A\), and (4) pairs with (a=b) are removed. Hence (16-4=12) pairs remain.

What exam hint can help solve this Mathematics question?

\(A\times A\) में (16) युग्म हैं और (a=b) वाले (4) युग्म हटते हैं। इसलिए (16-4=12) pairs रहेंगे।