समीकरणों (7x+ay=20) और (14x+10y=47) का कोई हल न होने के लिए (a) क्या होगा?
What will (a) be for the equations (7x+ay=20) and (14x+10y=47) to have no solution?
Explanation opens after your attempt
A. (5)
Concept
For no solution, (7/14=a/10) and (20/47) must be different. Therefore, (a=5).
Why this answer is correct
The correct answer is A. (5). For no solution, (7/14=a/10) and (20/47) must be different. Therefore, (a=5).
Exam Tip
कोई हल नहीं के लिए (7/14=a/10) और (20/47) अलग होना चाहिए। इसलिए (a=5) है।
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