यदि \(A=\{1,2\}\), \(B=\{3,4\}\) और \(C=\{4,5,6\}\) हैं, तो (A\times\(B\cup C\)) में कितने अवयव होंगे?

If \(A=\{1,2\}\), \(B=\{3,4\}\) and \(C=\{4,5,6\}\), how many elements are in (A\times\(B\cup C\))?

Explanation opens after your attempt
Correct Answer

A. (8)

Step 1

Concept

\(B\cup C={3,4,5,6}\), so total pairs are \(2\times4=8\). Do not count a common element twice in union.

Step 2

Why this answer is correct

The correct answer is A. (8). \(B\cup C={3,4,5,6}\), so total pairs are \(2\times4=8\). Do not count a common element twice in union.

Step 3

Exam Tip

\(B\cup C={3,4,5,6}\), इसलिए कुल युग्म \(2\times4=8\) हैं। संघ में समान अवयव को दो बार न गिनें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2\}\), \(B=\{3,4\}\) और \(C=\{4,5,6\}\) हैं, तो (A\times\(B\cup C\)) में कितने अवयव होंगे? / If \(A=\{1,2\}\), \(B=\{3,4\}\) and \(C=\{4,5,6\}\), how many elements are in (A\times\(B\cup C\))?

Correct Answer: A. (8). Explanation: \(B\cup C={3,4,5,6}\), इसलिए कुल युग्म \(2\times4=8\) हैं। संघ में समान अवयव को दो बार न गिनें। / \(B\cup C={3,4,5,6}\), so total pairs are \(2\times4=8\). Do not count a common element twice in union.

Which concept should I revise for this Mathematics MCQ?

\(B\cup C={3,4,5,6}\), so total pairs are \(2\times4=8\). Do not count a common element twice in union.

What exam hint can help solve this Mathematics question?

\(B\cup C={3,4,5,6}\), इसलिए कुल युग्म \(2\times4=8\) हैं। संघ में समान अवयव को दो बार न गिनें।