यदि \(A=\{1,2\}\), \(B=\{3,4\}\), \(C=\{5\}\) हैं, तो (A\times\(B\cup C\)) में कितने अवयव हैं?
If \(A=\{1,2\}\), \(B=\{3,4\}\), \(C=\{5\}\), how many elements are in (A\times\(B\cup C\))?
Explanation opens after your attempt
C. (6)
Concept
\(B\cup C={3,4,5}\), so (|A\times\(B\cup C\)|=2\cdot3=6). First evaluate the set inside the brackets.
Why this answer is correct
The correct answer is C. (6). \(B\cup C={3,4,5}\), so (|A\times\(B\cup C\)|=2\cdot3=6). First evaluate the set inside the brackets.
Exam Tip
\(B\cup C={3,4,5}\), इसलिए (|A\times\(B\cup C\)|=2\cdot3=6)। पहले कोष्ठक के भीतर का समुच्चय निकालें।
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