यदि \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,2,3,4\}\) और \(B=\{6,7\}\) है, तो (\(A\cup B\)') क्या है?

If \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,2,3,4\}\), and \(B=\{6,7\}\), what is (\(A\cup B\)')?

Explanation opens after your attempt
Correct Answer

A. ({5,8,9})

Step 1

Concept

\(A\cup B={1,2,3,4,6,7}\), so the remaining (5,8,9) in (U) are the complement. Finding the union first is necessary.

Step 2

Why this answer is correct

The correct answer is A. ({5,8,9}). \(A\cup B={1,2,3,4,6,7}\), so the remaining (5,8,9) in (U) are the complement. Finding the union first is necessary.

Step 3

Exam Tip

\(A\cup B={1,2,3,4,6,7}\), इसलिए (U) में बचे (5,8,9) पूरक हैं। पहले संघ निकालना जरूरी है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,2,3,4\}\) और \(B=\{6,7\}\) है, तो (\(A\cup B\)') क्या है? / If \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,2,3,4\}\), and \(B=\{6,7\}\), what is (\(A\cup B\)')?

Correct Answer: A. ({5,8,9}). Explanation: \(A\cup B={1,2,3,4,6,7}\), इसलिए (U) में बचे (5,8,9) पूरक हैं। पहले संघ निकालना जरूरी है। / \(A\cup B={1,2,3,4,6,7}\), so the remaining (5,8,9) in (U) are the complement. Finding the union first is necessary.

Which concept should I revise for this Mathematics MCQ?

\(A\cup B={1,2,3,4,6,7}\), so the remaining (5,8,9) in (U) are the complement. Finding the union first is necessary.

What exam hint can help solve this Mathematics question?

\(A\cup B={1,2,3,4,6,7}\), इसलिए (U) में बचे (5,8,9) पूरक हैं। पहले संघ निकालना जरूरी है।