यदि \(A=\{5,10,15\}\) और \(B=\{10,20\}\) है, तो (B-A) क्या है?

If \(A=\{5,10,15\}\) and \(B=\{10,20\}\), what is (B-A)?

Explanation opens after your attempt
Correct Answer

B. ( {20} )

Step 1

Concept

(B-A) keeps elements of (B) that are not in (A). Remember that (A-B) and (B-A) may be different.

Step 2

Why this answer is correct

The correct answer is B. ( {20} ). (B-A) keeps elements of (B) that are not in (A). Remember that (A-B) and (B-A) may be different.

Step 3

Exam Tip

(B-A) में (B) के वे अवयव रहते हैं जो (A) में नहीं हैं। (A-B) और (B-A) अलग हो सकते हैं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{5,10,15\}\) और \(B=\{10,20\}\) है, तो (B-A) क्या है? / If \(A=\{5,10,15\}\) and \(B=\{10,20\}\), what is (B-A)?

Correct Answer: B. ( {20} ). Explanation: (B-A) में (B) के वे अवयव रहते हैं जो (A) में नहीं हैं। (A-B) और (B-A) अलग हो सकते हैं। / (B-A) keeps elements of (B) that are not in (A). Remember that (A-B) and (B-A) may be different.

Which concept should I revise for this Mathematics MCQ?

(B-A) keeps elements of (B) that are not in (A). Remember that (A-B) and (B-A) may be different.

What exam hint can help solve this Mathematics question?

(B-A) में (B) के वे अवयव रहते हैं जो (A) में नहीं हैं। (A-B) और (B-A) अलग हो सकते हैं।