यदि \(A=\{-2,-1,0,1,2\}\) और \(B=\{0,1,4\}\), तो \(A\times B\) में \(b=a^2\) वाले युग्मों की संख्या कितनी है?

If \(A=\{-2,-1,0,1,2\}\) and \(B=\{0,1,4\}\), how many pairs in \(A\times B\) satisfy \(b=a^2\)?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

The squares of all five (a)-values are (4,1,0,1,4), all in (B). Therefore each (a) gives one pair.

Step 2

Why this answer is correct

The correct answer is C. (5). The squares of all five (a)-values are (4,1,0,1,4), all in (B). Therefore each (a) gives one pair.

Step 3

Exam Tip

पांचों (a) मानों के वर्ग (4,1,0,1,4) सभी (B) में हैं। इसलिए प्रत्येक (a) से एक युग्म बनेगा।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{-2,-1,0,1,2\}\) और \(B=\{0,1,4\}\), तो \(A\times B\) में \(b=a^2\) वाले युग्मों की संख्या कितनी है? / If \(A=\{-2,-1,0,1,2\}\) and \(B=\{0,1,4\}\), how many pairs in \(A\times B\) satisfy \(b=a^2\)?

Correct Answer: C. (5). Explanation: पांचों (a) मानों के वर्ग (4,1,0,1,4) सभी (B) में हैं। इसलिए प्रत्येक (a) से एक युग्म बनेगा। / The squares of all five (a)-values are (4,1,0,1,4), all in (B). Therefore each (a) gives one pair.

Which concept should I revise for this Mathematics MCQ?

The squares of all five (a)-values are (4,1,0,1,4), all in (B). Therefore each (a) gives one pair.

What exam hint can help solve this Mathematics question?

पांचों (a) मानों के वर्ग (4,1,0,1,4) सभी (B) में हैं। इसलिए प्रत्येक (a) से एक युग्म बनेगा।