यदि \(A=\{3,6,9,12,15\}\) और \(B=\{6,12,18\}\) है, तो (A-B) क्या होगा?

If \(A=\{3,6,9,12,15\}\) and \(B=\{6,12,18\}\), what is (A-B)?

Explanation opens after your attempt
Correct Answer

A. ( {3,9,15} )

Step 1

Concept

(A-B) keeps elements of (A) that are not in (B). Always start from the first set in difference.

Step 2

Why this answer is correct

The correct answer is A. ( {3,9,15} ). (A-B) keeps elements of (A) that are not in (B). Always start from the first set in difference.

Step 3

Exam Tip

(A-B) में (A) के वे अवयव रहते हैं जो (B) में नहीं हैं। अंतर में हमेशा पहले समुच्चय से शुरुआत करें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{3,6,9,12,15\}\) और \(B=\{6,12,18\}\) है, तो (A-B) क्या होगा? / If \(A=\{3,6,9,12,15\}\) and \(B=\{6,12,18\}\), what is (A-B)?

Correct Answer: A. ( {3,9,15} ). Explanation: (A-B) में (A) के वे अवयव रहते हैं जो (B) में नहीं हैं। अंतर में हमेशा पहले समुच्चय से शुरुआत करें। / (A-B) keeps elements of (A) that are not in (B). Always start from the first set in difference.

Which concept should I revise for this Mathematics MCQ?

(A-B) keeps elements of (A) that are not in (B). Always start from the first set in difference.

What exam hint can help solve this Mathematics question?

(A-B) में (A) के वे अवयव रहते हैं जो (B) में नहीं हैं। अंतर में हमेशा पहले समुच्चय से शुरुआत करें।