समीकरण (2x+ay=7) और (4x+10y=14) के अनंत हल होने के लिए (a) का मान क्या है?
What is the value of (a) for (2x+ay=7) and (4x+10y=14) to have infinitely many solutions?
Explanation opens after your attempt
C. (5)
Concept
For infinitely many solutions (2/4=a/10=7/14) must hold so (a=5). Making all three ratios equal is necessary.
Why this answer is correct
The correct answer is C. (5). For infinitely many solutions (2/4=a/10=7/14) must hold so (a=5). Making all three ratios equal is necessary.
Exam Tip
अनंत हल के लिए (2/4=a/10=7/14) होना चाहिए इसलिए (a=5)। तीनों अनुपात बराबर करना जरूरी है।
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