Solution:
B. 3
Explanation:
![Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 - Image 62](https://cdn1.byjus.com/wp-content/uploads/2020/04/maharashtra-board-solutions-for-class-10-maths-part-1-chapter1-image-62.png)
2. For simultaneous equations in variables x and y, DX = 49, DY = –63, D = 7, then what is x?
A. 7
B. –7
C. 1/7
D. -1/7
Solution:
A. 7
Explanation:
![Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 - Image 63](https://cdn1.byjus.com/wp-content/uploads/2020/04/maharashtra-board-solutions-for-class-10-maths-part-1-chapter1-image-63.png)
![](https://ai-shiksha.com/wp-content/uploads/2024/02/image-5.png)
Solution:
D. 1
Explanation:
![Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 - Image 65](https://cdn1.byjus.com/wp-content/uploads/2020/04/maharashtra-board-solutions-for-class-10-maths-part-1-chapter1-image-65.png)
4. To solve x + y = 3; 3x–2y – 4 = 0 by determinant method find D.
A. 5
B. 1
C. –5
D. –1
Solution:
C. -5
Explanation:
![Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 - Image 66](https://cdn1.byjus.com/wp-content/uploads/2020/04/maharashtra-board-solutions-for-class-10-maths-part-1-chapter1-image-66.png)
5. ax + by = c and mx + ny = d and an ≠ bm then these simultaneous equations have –
A. Only one common solution.
B. No solution.
C. Infinite number of solutions.
D. Only two solutions.
Solution:
A. Only one common solution.
Explanation:
![Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 Maharashtra Board Solutions for Class 10 Maths Part 1 Chapter1 - Image 67](https://cdn1.byjus.com/wp-content/uploads/2020/04/maharashtra-board-solutions-for-class-10-maths-part-1-chapter1-image-67.png)