यदि \(A=\{2,4,6,8,10\}\) और \(B=\{1,2,3,4,5\}\) है, तो \(A\cup B\) में कितने अवयव हैं?

If \(A=\{2,4,6,8,10\}\) and \(B=\{1,2,3,4,5\}\), how many elements are in \(A\cup B\)?

Explanation opens after your attempt
Correct Answer

C. (8)

Step 1

Concept

\(A\cup B={1,2,3,4,5,6,8,10}\), so it has (8) elements. Do not count common elements twice.

Step 2

Why this answer is correct

The correct answer is C. (8). \(A\cup B={1,2,3,4,5,6,8,10}\), so it has (8) elements. Do not count common elements twice.

Step 3

Exam Tip

\(A\cup B={1,2,3,4,5,6,8,10}\) है, इसलिए अवयव (8) हैं। गिनते समय समान अवयव दो बार न गिनें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{2,4,6,8,10\}\) और \(B=\{1,2,3,4,5\}\) है, तो \(A\cup B\) में कितने अवयव हैं? / If \(A=\{2,4,6,8,10\}\) and \(B=\{1,2,3,4,5\}\), how many elements are in \(A\cup B\)?

Correct Answer: C. (8). Explanation: \(A\cup B={1,2,3,4,5,6,8,10}\) है, इसलिए अवयव (8) हैं। गिनते समय समान अवयव दो बार न गिनें। / \(A\cup B={1,2,3,4,5,6,8,10}\), so it has (8) elements. Do not count common elements twice.

Which concept should I revise for this Mathematics MCQ?

\(A\cup B={1,2,3,4,5,6,8,10}\), so it has (8) elements. Do not count common elements twice.

What exam hint can help solve this Mathematics question?

\(A\cup B={1,2,3,4,5,6,8,10}\) है, इसलिए अवयव (8) हैं। गिनते समय समान अवयव दो बार न गिनें।