यदि \(U={x:x \in \mathbb{N},x\le 60}\), \(A={x:x \in U,4\mid x}\) और \(B={x:x \in U,9\mid x}\), तो (n(\(A\cup B\)')) क्या है?

If \(U={x:x \in \mathbb{N},x\le 60}\), \(A={x:x \in U,4\mid x}\), and \(B={x:x \in U,9\mid x}\), what is (n(\(A\cup B\)'))?

Explanation opens after your attempt
Correct Answer

A. (40)

Step 1

Concept

Numbers divisible by (4) or (9) are (15+6-1=20). So the complement has (60-20=40) elements.

Step 2

Why this answer is correct

The correct answer is A. (40). Numbers divisible by (4) or (9) are (15+6-1=20). So the complement has (60-20=40) elements.

Step 3

Exam Tip

(4) या (9) से विभाज्य संख्याएं (15+6-1=20) हैं। इसलिए पूरक में (60-20=40) सदस्य हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(U={x:x \in \mathbb{N},x\le 60}\), \(A={x:x \in U,4\mid x}\) और \(B={x:x \in U,9\mid x}\), तो (n(\(A\cup B\)')) क्या है? / If \(U={x:x \in \mathbb{N},x\le 60}\), \(A={x:x \in U,4\mid x}\), and \(B={x:x \in U,9\mid x}\), what is (n(\(A\cup B\)'))?

Correct Answer: A. (40). Explanation: (4) या (9) से विभाज्य संख्याएं (15+6-1=20) हैं। इसलिए पूरक में (60-20=40) सदस्य हैं। / Numbers divisible by (4) or (9) are (15+6-1=20). So the complement has (60-20=40) elements.

Which concept should I revise for this Mathematics MCQ?

Numbers divisible by (4) or (9) are (15+6-1=20). So the complement has (60-20=40) elements.

What exam hint can help solve this Mathematics question?

(4) या (9) से विभाज्य संख्याएं (15+6-1=20) हैं। इसलिए पूरक में (60-20=40) सदस्य हैं।