यदि \(A=\{1,2\}\), \(B=\{2,3\}\), \(C=\{3,4\}\) हैं, तो (\(A\times B\)\cup\(A\times C\)) की कार्डिनलिटी क्या है?

If \(A=\{1,2\}\), \(B=\{2,3\}\), \(C=\{3,4\}\), what is the cardinality of (\(A\times B\)\cup\(A\times C\))?

Explanation opens after your attempt
Correct Answer

B. (6)

Step 1

Concept

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={2,3,4}\). Hence the cardinality is \(2\cdot3=6\).

Step 2

Why this answer is correct

The correct answer is B. (6). (\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={2,3,4}\). Hence the cardinality is \(2\cdot3=6\).

Step 3

Exam Tip

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)) और \(B\cup C={2,3,4}\)। इसलिए कार्डिनलिटी \(2\cdot3=6\) है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2\}\), \(B=\{2,3\}\), \(C=\{3,4\}\) हैं, तो (\(A\times B\)\cup\(A\times C\)) की कार्डिनलिटी क्या है? / If \(A=\{1,2\}\), \(B=\{2,3\}\), \(C=\{3,4\}\), what is the cardinality of (\(A\times B\)\cup\(A\times C\))?

Correct Answer: B. (6). Explanation: (\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)) और \(B\cup C={2,3,4}\)। इसलिए कार्डिनलिटी \(2\cdot3=6\) है। / (\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={2,3,4}\). Hence the cardinality is \(2\cdot3=6\).

Which concept should I revise for this Mathematics MCQ?

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={2,3,4}\). Hence the cardinality is \(2\cdot3=6\).

What exam hint can help solve this Mathematics question?

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)) और \(B\cup C={2,3,4}\)। इसलिए कार्डिनलिटी \(2\cdot3=6\) है।