यदि (n(A)=10) और (n\(A\cap B\)=4) है, तो (n(A-B)) कितना होगा?

If (n(A)=10) and (n\(A\cap B\)=4), what is (n(A-B))?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

In (A-B), the (4) common elements are removed from (A), so (10-4=6). For difference, count only from the first set.

Step 2

Why this answer is correct

The correct answer is C. (6). In (A-B), the (4) common elements are removed from (A), so (10-4=6). For difference, count only from the first set.

Step 3

Exam Tip

(A-B) में (A) से सामान्य (4) अवयव हटते हैं, इसलिए (10-4=6)। अंतर में केवल पहले समुच्चय की गिनती देखें।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A)=10) और (n\(A\cap B\)=4) है, तो (n(A-B)) कितना होगा? / If (n(A)=10) and (n\(A\cap B\)=4), what is (n(A-B))?

Correct Answer: C. (6). Explanation: (A-B) में (A) से सामान्य (4) अवयव हटते हैं, इसलिए (10-4=6)। अंतर में केवल पहले समुच्चय की गिनती देखें। / In (A-B), the (4) common elements are removed from (A), so (10-4=6). For difference, count only from the first set.

Which concept should I revise for this Mathematics MCQ?

In (A-B), the (4) common elements are removed from (A), so (10-4=6). For difference, count only from the first set.

What exam hint can help solve this Mathematics question?

(A-B) में (A) से सामान्य (4) अवयव हटते हैं, इसलिए (10-4=6)। अंतर में केवल पहले समुच्चय की गिनती देखें।