यदि \(U={1,2,\ldots,27}\), \(A={x:x \in U,3\mid x}\), तो (A') में (2) से विभाज्य सदस्यों की संख्या कितनी है?

If \(U={1,2,\ldots,27}\), \(A={x:x \in U,3\mid x}\), how many elements divisible by (2) are in (A')?

Explanation opens after your attempt
Correct Answer

A. (9)

Step 1

Concept

There are (13) even numbers up to (27). Among them (6,12,18,24) are also divisible by (3), so (13-4=9) remain.

Step 2

Why this answer is correct

The correct answer is A. (9). There are (13) even numbers up to (27). Among them (6,12,18,24) are also divisible by (3), so (13-4=9) remain.

Step 3

Exam Tip

(27) तक सम संख्याएं (13) हैं। इनमें (6,12,18,24) (3) से भी विभाज्य हैं, इसलिए (13-4=9) बचते हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(U={1,2,\ldots,27}\), \(A={x:x \in U,3\mid x}\), तो (A') में (2) से विभाज्य सदस्यों की संख्या कितनी है? / If \(U={1,2,\ldots,27}\), \(A={x:x \in U,3\mid x}\), how many elements divisible by (2) are in (A')?

Correct Answer: A. (9). Explanation: (27) तक सम संख्याएं (13) हैं। इनमें (6,12,18,24) (3) से भी विभाज्य हैं, इसलिए (13-4=9) बचते हैं। / There are (13) even numbers up to (27). Among them (6,12,18,24) are also divisible by (3), so (13-4=9) remain.

Which concept should I revise for this Mathematics MCQ?

There are (13) even numbers up to (27). Among them (6,12,18,24) are also divisible by (3), so (13-4=9) remain.

What exam hint can help solve this Mathematics question?

(27) तक सम संख्याएं (13) हैं। इनमें (6,12,18,24) (3) से भी विभाज्य हैं, इसलिए (13-4=9) बचते हैं।