यदि \(A=\{0,1\}\), \(B=\{2,3,4\}\) और \(C=\{4,5\}\) हैं, तो (\(A\times B\)\cup\(A\times C\)) की कार्डिनलिटी क्या है?
If \(A=\{0,1\}\), \(B=\{2,3,4\}\), and \(C=\{4,5\}\), what is the cardinality of (\(A\times B\)\cup\(A\times C\))?
Explanation opens after your attempt
B. (8)
Concept
(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={2,3,4,5}\). Thus there are \(2\cdot4=8\) elements.
Why this answer is correct
The correct answer is B. (8). (\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)), and \(B\cup C={2,3,4,5}\). Thus there are \(2\cdot4=8\) elements.
Exam Tip
(\(A\times B\)\cup\(A\times C\)=A\times\(B\cup C\)) और \(B\cup C={2,3,4,5}\)। इसलिए \(2\cdot4=8\) अवयव हैं।
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