समीकरण (3x+ay=21) और (9x+12y=63) के अनंत हल होने के लिए (a) क्या होगा?

What will (a) be for (3x+ay=21) and (9x+12y=63) to have infinitely many solutions?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

For infinitely many solutions, (3/9=a/12=21/63) must hold. Therefore, (a=4).

Step 2

Why this answer is correct

The correct answer is C. (4). For infinitely many solutions, (3/9=a/12=21/63) must hold. Therefore, (a=4).

Step 3

Exam Tip

अनंत हल के लिए (3/9=a/12=21/63) होना चाहिए। इसलिए (a=4) है।

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समीकरण (3x+ay=21) और (9x+12y=63) के अनंत हल होने के लिए (a) क्या होगा? / What will (a) be for (3x+ay=21) and (9x+12y=63) to have infinitely many solutions?

Correct Answer: C. (4). Explanation: अनंत हल के लिए (3/9=a/12=21/63) होना चाहिए। इसलिए (a=4) है। / For infinitely many solutions, (3/9=a/12=21/63) must hold. Therefore, (a=4).

Which concept should I revise for this Mathematics MCQ?

For infinitely many solutions, (3/9=a/12=21/63) must hold. Therefore, (a=4).

What exam hint can help solve this Mathematics question?

अनंत हल के लिए (3/9=a/12=21/63) होना चाहिए। इसलिए (a=4) है।