समीकरणों (5x+10y=20) और (kx+2y=7) का कोई हल न हो, इसके लिए (k) का मान क्या है?

For (5x+10y=20) and (kx+2y=7) to have no solution, what is the value of (k)?

Explanation opens after your attempt
Correct Answer

B. (k=1)

Step 1

Concept

The first equation becomes (x+2y=4). At (k=1), the second becomes (x+2y=7), so there is no solution.

Step 2

Why this answer is correct

The correct answer is B. (k=1). The first equation becomes (x+2y=4). At (k=1), the second becomes (x+2y=7), so there is no solution.

Step 3

Exam Tip

पहला समीकरण (x+2y=4) बनता है। (k=1) पर दूसरा (x+2y=7) होगा, इसलिए कोई हल नहीं।

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समीकरणों (5x+10y=20) और (kx+2y=7) का कोई हल न हो, इसके लिए (k) का मान क्या है? / For (5x+10y=20) and (kx+2y=7) to have no solution, what is the value of (k)?

Correct Answer: B. (k=1). Explanation: पहला समीकरण (x+2y=4) बनता है। (k=1) पर दूसरा (x+2y=7) होगा, इसलिए कोई हल नहीं। / The first equation becomes (x+2y=4). At (k=1), the second becomes (x+2y=7), so there is no solution.

Which concept should I revise for this Mathematics MCQ?

The first equation becomes (x+2y=4). At (k=1), the second becomes (x+2y=7), so there is no solution.

What exam hint can help solve this Mathematics question?

पहला समीकरण (x+2y=4) बनता है। (k=1) पर दूसरा (x+2y=7) होगा, इसलिए कोई हल नहीं।