समीकरणों (7x+ay=49) और (21x+18y=147) के अनंत हल होने के लिए (a) क्या होगा?

What will (a) be for the equations (7x+ay=49) and (21x+18y=147) to have infinitely many solutions?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

For infinitely many solutions, (7/21=a/18=49/147) must hold. This gives (a=6).

Step 2

Why this answer is correct

The correct answer is C. (6). For infinitely many solutions, (7/21=a/18=49/147) must hold. This gives (a=6).

Step 3

Exam Tip

अनंत हल के लिए (7/21=a/18=49/147) होना चाहिए। इससे (a=6) मिलता है।

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समीकरणों (7x+ay=49) और (21x+18y=147) के अनंत हल होने के लिए (a) क्या होगा? / What will (a) be for the equations (7x+ay=49) and (21x+18y=147) to have infinitely many solutions?

Correct Answer: C. (6). Explanation: अनंत हल के लिए (7/21=a/18=49/147) होना चाहिए। इससे (a=6) मिलता है। / For infinitely many solutions, (7/21=a/18=49/147) must hold. This gives (a=6).

Which concept should I revise for this Mathematics MCQ?

For infinitely many solutions, (7/21=a/18=49/147) must hold. This gives (a=6).

What exam hint can help solve this Mathematics question?

अनंत हल के लिए (7/21=a/18=49/147) होना चाहिए। इससे (a=6) मिलता है।