यदि (n(A)=18) और (n\(A\cap B\)=7) है, तो (n(A-B)) कितना होगा?

If (n(A)=18) and (n\(A\cap B\)=7), what is (n(A-B))?

Explanation opens after your attempt
Correct Answer

C. (11)

Step 1

Concept

In (A-B), the (7) common elements are removed from (A), so (18-7=11). Count only elements related to (A).

Step 2

Why this answer is correct

The correct answer is C. (11). In (A-B), the (7) common elements are removed from (A), so (18-7=11). Count only elements related to (A).

Step 3

Exam Tip

(A-B) में (A) से सामान्य (7) अवयव हटेंगे, इसलिए (18-7=11) है। केवल (A) से जुड़े अवयव गिनें।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A)=18) और (n\(A\cap B\)=7) है, तो (n(A-B)) कितना होगा? / If (n(A)=18) and (n\(A\cap B\)=7), what is (n(A-B))?

Correct Answer: C. (11). Explanation: (A-B) में (A) से सामान्य (7) अवयव हटेंगे, इसलिए (18-7=11) है। केवल (A) से जुड़े अवयव गिनें। / In (A-B), the (7) common elements are removed from (A), so (18-7=11). Count only elements related to (A).

Which concept should I revise for this Mathematics MCQ?

In (A-B), the (7) common elements are removed from (A), so (18-7=11). Count only elements related to (A).

What exam hint can help solve this Mathematics question?

(A-B) में (A) से सामान्य (7) अवयव हटेंगे, इसलिए (18-7=11) है। केवल (A) से जुड़े अवयव गिनें।