यदि \(A=\{1,2,3\}\) है और \(|A\times B|=12\), तो (|B|) क्या होगा?

If \(A=\{1,2,3\}\) and \(|A\times B|=12\), what is (|B|)?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

Since (|A|=3) and \(3\cdot |B|=12\), we get (|B|=4). Divide to find the unknown cardinality.

Step 2

Why this answer is correct

The correct answer is B. (4). Since (|A|=3) and \(3\cdot |B|=12\), we get (|B|=4). Divide to find the unknown cardinality.

Step 3

Exam Tip

(|A|=3) और \(3\cdot |B|=12\), इसलिए (|B|=4)। अज्ञात कार्डिनलिटी निकालने में भाग दें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3\}\) है और \(|A\times B|=12\), तो (|B|) क्या होगा? / If \(A=\{1,2,3\}\) and \(|A\times B|=12\), what is (|B|)?

Correct Answer: B. (4). Explanation: (|A|=3) और \(3\cdot |B|=12\), इसलिए (|B|=4)। अज्ञात कार्डिनलिटी निकालने में भाग दें। / Since (|A|=3) and \(3\cdot |B|=12\), we get (|B|=4). Divide to find the unknown cardinality.

Which concept should I revise for this Mathematics MCQ?

Since (|A|=3) and \(3\cdot |B|=12\), we get (|B|=4). Divide to find the unknown cardinality.

What exam hint can help solve this Mathematics question?

(|A|=3) और \(3\cdot |B|=12\), इसलिए (|B|=4)। अज्ञात कार्डिनलिटी निकालने में भाग दें।