समीकरणों (7x+qy=29) और (14x+10y=58) के अनंत हल होने के लिए (q) का मान क्या है?

What is the value of (q) for the equations (7x+qy=29) and (14x+10y=58) to have infinitely many solutions?

Explanation opens after your attempt
Correct Answer

C. (5)

Step 1

Concept

The second equation is (2) times the first, so (q/10=1/2) must hold. Hence, (q=5).

Step 2

Why this answer is correct

The correct answer is C. (5). The second equation is (2) times the first, so (q/10=1/2) must hold. Hence, (q=5).

Step 3

Exam Tip

दूसरा समीकरण पहले का (2) गुना है, इसलिए (q/10=1/2) होना चाहिए। अतः (q=5)।

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Mathematics Answer, Explanation and Revision Hints

समीकरणों (7x+qy=29) और (14x+10y=58) के अनंत हल होने के लिए (q) का मान क्या है? / What is the value of (q) for the equations (7x+qy=29) and (14x+10y=58) to have infinitely many solutions?

Correct Answer: C. (5). Explanation: दूसरा समीकरण पहले का (2) गुना है, इसलिए (q/10=1/2) होना चाहिए। अतः (q=5)। / The second equation is (2) times the first, so (q/10=1/2) must hold. Hence, (q=5).

Which concept should I revise for this Mathematics MCQ?

The second equation is (2) times the first, so (q/10=1/2) must hold. Hence, (q=5).

What exam hint can help solve this Mathematics question?

दूसरा समीकरण पहले का (2) गुना है, इसलिए (q/10=1/2) होना चाहिए। अतः (q=5)।