यदि \(A=\{1,2,3\}\) है और \(A\times B\) में कुल (15) अवयव हैं, तो (|B|) क्या होगा?

If \(A=\{1,2,3\}\) and \(A\times B\) has (15) elements, what is (|B|)?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

Since (|A|=3) and \(3\cdot|B|=15\), (|B|=5). Divide to find the unknown cardinality.

Step 2

Why this answer is correct

The correct answer is C. (5). Since (|A|=3) and \(3\cdot|B|=15\), (|B|=5). Divide to find the unknown cardinality.

Step 3

Exam Tip

(|A|=3) और \(3\cdot|B|=15\), इसलिए (|B|=5)। अज्ञात कार्डिनलिटी के लिए भाग करें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3\}\) है और \(A\times B\) में कुल (15) अवयव हैं, तो (|B|) क्या होगा? / If \(A=\{1,2,3\}\) and \(A\times B\) has (15) elements, what is (|B|)?

Correct Answer: C. (5). Explanation: (|A|=3) और \(3\cdot|B|=15\), इसलिए (|B|=5)। अज्ञात कार्डिनलिटी के लिए भाग करें। / Since (|A|=3) and \(3\cdot|B|=15\), (|B|=5). Divide to find the unknown cardinality.

Which concept should I revise for this Mathematics MCQ?

Since (|A|=3) and \(3\cdot|B|=15\), (|B|=5). Divide to find the unknown cardinality.

What exam hint can help solve this Mathematics question?

(|A|=3) और \(3\cdot|B|=15\), इसलिए (|B|=5)। अज्ञात कार्डिनलिटी के लिए भाग करें।