\(यदि (U={1,2,\ldots,30}), (A={x:x\) 2 या 3 से विभाज्य है}), तो (A') में कितने अवयव हैं?

\(If (U={1,2,\ldots,30}), (A={x:x\) is divisible by 2 or 3}), how many elements are in (A')?

Explanation opens after your attempt
Correct Answer

C. (10)

Step 1

Concept

Numbers divisible by (2) or (3) are (15+10-5=20). Therefore the complement contains (30-20=10) numbers.

Step 2

Why this answer is correct

The correct answer is C. (10). Numbers divisible by (2) or (3) are (15+10-5=20). Therefore the complement contains (30-20=10) numbers.

Step 3

Exam Tip

(2) या (3) से विभाज्य संख्याएँ (15+10-5=20) हैं। इसलिए पूरक में (30-20=10) संख्याएँ हैं।

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Mathematics Answer, Explanation and Revision Hints

\(यदि (U={1,2,\ldots,30}), (A={x:x\) 2 या 3 से विभाज्य है}), तो (A') में कितने अवयव हैं? \(/ If (U={1,2,\ldots,30}), (A={x:x\) is divisible by 2 or 3}), how many elements are in (A')?

Correct Answer: C. (10). Explanation: (2) या (3) से विभाज्य संख्याएँ (15+10-5=20) हैं। इसलिए पूरक में (30-20=10) संख्याएँ हैं। / Numbers divisible by (2) or (3) are (15+10-5=20). Therefore the complement contains (30-20=10) numbers.

Which concept should I revise for this Mathematics MCQ?

Numbers divisible by (2) or (3) are (15+10-5=20). Therefore the complement contains (30-20=10) numbers.

What exam hint can help solve this Mathematics question?

(2) या (3) से विभाज्य संख्याएँ (15+10-5=20) हैं। इसलिए पूरक में (30-20=10) संख्याएँ हैं।