\(यदि सार्वत्रिक समुच्चय (U={1,2,3,\ldots,20}) और (A={x:x \in U\) तथा x अभाज्य है}) है, तो (A') क्या होगा?

\(If the universal set is (U={1,2,3,\ldots,20}) and (A={x:x \in U\) and x is prime}), then what is (A')?

Explanation opens after your attempt
Correct Answer

A. (A'={1,4,6,8,9,10,12,14,15,16,18,20})

Step 1

Concept

(A') contains the elements of (U) that are not in (A). In exams remember that (1) is not prime.

Step 2

Why this answer is correct

The correct answer is A. (A'={1,4,6,8,9,10,12,14,15,16,18,20}). (A') contains the elements of (U) that are not in (A). In exams remember that (1) is not prime.

Step 3

Exam Tip

(A') में (U) के वे सदस्य आते हैं जो (A) में नहीं हैं। परीक्षा में (1) को अभाज्य न मानें।

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Mathematics Answer, Explanation and Revision Hints

\(यदि सार्वत्रिक समुच्चय (U={1,2,3,\ldots,20}) और (A={x:x \in U\) तथा x अभाज्य है}) है, तो (A') क्या होगा? \(/ If the universal set is (U={1,2,3,\ldots,20}) and (A={x:x \in U\) and x is prime}), then what is (A')?

Correct Answer: A. (A'={1,4,6,8,9,10,12,14,15,16,18,20}). Explanation: (A') में (U) के वे सदस्य आते हैं जो (A) में नहीं हैं। परीक्षा में (1) को अभाज्य न मानें। / (A') contains the elements of (U) that are not in (A). In exams remember that (1) is not prime.

Which concept should I revise for this Mathematics MCQ?

(A') contains the elements of (U) that are not in (A). In exams remember that (1) is not prime.

What exam hint can help solve this Mathematics question?

(A') में (U) के वे सदस्य आते हैं जो (A) में नहीं हैं। परीक्षा में (1) को अभाज्य न मानें।