यदि \(A=\{1,2,3\}\), \(B=\{4,5\}\) और \(C=\{5,6\}\) हैं, तो (\(A\times B\)\cup\(A\times C\)) की कार्डिनलिटी क्या है?

If \(A=\{1,2,3\}\), \(B=\{4,5\}\), and \(C=\{5,6\}\), what is the cardinality of (\(A\times B\)\cup\(A\times C\))?

Explanation opens after your attempt
Correct Answer

C. (9)

Step 1

Concept

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={4,5,6}\). Thus there are \(3\cdot3=9\) elements.

Step 2

Why this answer is correct

The correct answer is C. (9). (\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={4,5,6}\). Thus there are \(3\cdot3=9\) elements.

Step 3

Exam Tip

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)) और \(B\cup C={4,5,6}\)। इसलिए \(3\cdot3=9\) अवयव हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3\}\), \(B=\{4,5\}\) और \(C=\{5,6\}\) हैं, तो (\(A\times B\)\cup\(A\times C\)) की कार्डिनलिटी क्या है? / If \(A=\{1,2,3\}\), \(B=\{4,5\}\), and \(C=\{5,6\}\), what is the cardinality of (\(A\times B\)\cup\(A\times C\))?

Correct Answer: C. (9). Explanation: (\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)) और \(B\cup C={4,5,6}\)। इसलिए \(3\cdot3=9\) अवयव हैं। / (\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={4,5,6}\). Thus there are \(3\cdot3=9\) elements.

Which concept should I revise for this Mathematics MCQ?

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={4,5,6}\). Thus there are \(3\cdot3=9\) elements.

What exam hint can help solve this Mathematics question?

(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)) और \(B\cup C={4,5,6}\)। इसलिए \(3\cdot3=9\) अवयव हैं।