यदि (n(A)=5x+4), (n(B)=4x+7), (n\(A\cap B\)=2x+3) और (n\(A\cup B\)=78) है, तो (x) का मान क्या है?

If (n(A)=5x+4), (n(B)=4x+7), (n\(A\cap B\)=2x+3) and (n\(A\cup B\)=78), then what is the value of (x)?

Explanation opens after your attempt
Correct Answer

A. (10)

Step 1

Concept

(78=(5x+4)+(4x+7)-(2x+3)=7x+8), so (x=10). In algebraic questions, apply the union formula directly.

Step 2

Why this answer is correct

The correct answer is A. (10). (78=(5x+4)+(4x+7)-(2x+3)=7x+8), so (x=10). In algebraic questions, apply the union formula directly.

Step 3

Exam Tip

(78=(5x+4)+(4x+7)-(2x+3)=7x+8), इसलिए (x=10) है। बीजगणितीय प्रश्न में संघ का सूत्र सीधे लगाएँ।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

Mathematics Answer, Explanation and Revision Hints

यदि (n(A)=5x+4), (n(B)=4x+7), (n\(A\cap B\)=2x+3) और (n\(A\cup B\)=78) है, तो (x) का मान क्या है? / If (n(A)=5x+4), (n(B)=4x+7), (n\(A\cap B\)=2x+3) and (n\(A\cup B\)=78), then what is the value of (x)?

Correct Answer: A. (10). Explanation: (78=(5x+4)+(4x+7)-(2x+3)=7x+8), इसलिए (x=10) है। बीजगणितीय प्रश्न में संघ का सूत्र सीधे लगाएँ। / (78=(5x+4)+(4x+7)-(2x+3)=7x+8), so (x=10). In algebraic questions, apply the union formula directly.

Which concept should I revise for this Mathematics MCQ?

(78=(5x+4)+(4x+7)-(2x+3)=7x+8), so (x=10). In algebraic questions, apply the union formula directly.

What exam hint can help solve this Mathematics question?

(78=(5x+4)+(4x+7)-(2x+3)=7x+8), इसलिए (x=10) है। बीजगणितीय प्रश्न में संघ का सूत्र सीधे लगाएँ।