यदि (|A|=41), (|B|=36) और \(|A\setminus B|=19\), तो \(|A\cup B|\) कितना है?

If (|A|=41), (|B|=36) and \(|A\setminus B|=19\), what is \(|A\cup B|\)?

Explanation opens after your attempt
Correct Answer

A. (55)

Step 1

Concept

Here \(|A\cap B|=41-19=22\), so \(|A\cup B|=41+36-22=55\). Finding the common part first is essential.

Step 2

Why this answer is correct

The correct answer is A. (55). Here \(|A\cap B|=41-19=22\), so \(|A\cup B|=41+36-22=55\). Finding the common part first is essential.

Step 3

Exam Tip

\(|A\cap B|=41-19=22\), इसलिए \(|A\cup B|=41+36-22=55\)। पहले सामान्य भाग निकालना आवश्यक है।

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Mathematics Answer, Explanation and Revision Hints

यदि (|A|=41), (|B|=36) और \(|A\setminus B|=19\), तो \(|A\cup B|\) कितना है? / If (|A|=41), (|B|=36) and \(|A\setminus B|=19\), what is \(|A\cup B|\)?

Correct Answer: A. (55). Explanation: \(|A\cap B|=41-19=22\), इसलिए \(|A\cup B|=41+36-22=55\)। पहले सामान्य भाग निकालना आवश्यक है। / Here \(|A\cap B|=41-19=22\), so \(|A\cup B|=41+36-22=55\). Finding the common part first is essential.

Which concept should I revise for this Mathematics MCQ?

Here \(|A\cap B|=41-19=22\), so \(|A\cup B|=41+36-22=55\). Finding the common part first is essential.

What exam hint can help solve this Mathematics question?

\(|A\cap B|=41-19=22\), इसलिए \(|A\cup B|=41+36-22=55\)। पहले सामान्य भाग निकालना आवश्यक है।