यदि (n(U)=70), बाहर का क्षेत्र (12), केवल (A) (18), और केवल (B) (20) है, तो (n\(A\cap B\)) क्या है?

If (n(U)=70), the outside region is (12), only (A) is (18), and only (B) is (20), what is (n\(A\cap B\))?

Explanation opens after your attempt
Correct Answer

A. (20)

Step 1

Concept

The common part is (70-12-18-20=20). To get an unknown region in a Venn diagram, subtract known regions from the total.

Step 2

Why this answer is correct

The correct answer is A. (20). The common part is (70-12-18-20=20). To get an unknown region in a Venn diagram, subtract known regions from the total.

Step 3

Exam Tip

साझा भाग (70-12-18-20=20) होगा। वेन आरेख में अज्ञात क्षेत्र पाने के लिए कुल से ज्ञात क्षेत्र घटाएं।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(U)=70), बाहर का क्षेत्र (12), केवल (A) (18), और केवल (B) (20) है, तो (n\(A\cap B\)) क्या है? / If (n(U)=70), the outside region is (12), only (A) is (18), and only (B) is (20), what is (n\(A\cap B\))?

Correct Answer: A. (20). Explanation: साझा भाग (70-12-18-20=20) होगा। वेन आरेख में अज्ञात क्षेत्र पाने के लिए कुल से ज्ञात क्षेत्र घटाएं। / The common part is (70-12-18-20=20). To get an unknown region in a Venn diagram, subtract known regions from the total.

Which concept should I revise for this Mathematics MCQ?

The common part is (70-12-18-20=20). To get an unknown region in a Venn diagram, subtract known regions from the total.

What exam hint can help solve this Mathematics question?

साझा भाग (70-12-18-20=20) होगा। वेन आरेख में अज्ञात क्षेत्र पाने के लिए कुल से ज्ञात क्षेत्र घटाएं।