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