1 2 3 4 A 4 B 4 C 4 D 4 E 4 F 5 6 7 8 9

West Bengal Mathematics

1. Real Numbers

1. Real Numbers
2. Laws of Indices
3. Graph
4. Co-ordinate Geometry: Distance Formula
5. Linear Simultaneous Equations
6. Properties of Parallelogram
7. Polynomial
8. Factorisation
9. Transversal and Mid-Point Theorem
10. Profit and Loss
11. Statistics
12. Theorems on Area
13. Construction: (Construction of a Parallelogram whose measurement of one angle is given and equal in area of a triangle)
14. Construction: (Construction of a triangle equal in area of a quadrilateral)
15. Area and Perimeter of Triangle and Quadrilateral Shaped Region
16. Circumference of Circle
17. Theorems on concurrence
18. Area of Circular Region
19. Co-ordinate Geometry: Internal and External Division of Straight Line Segment
20. Co-ordinate Geometry: Area of Triangular Region
21. Logarithm

Let us Work Out 1.1

1 2 3 4 A 4 B 4 C 4 D 4 E 4 F 5 6 7 8 9

Let us Work Out 1.2

Q. 24.6( 28 Votes )

Is 0 a rational n

Class 9th West Bengal Mathematics 1. Real Numbers

Answer :

Yes 0 is a rational number

As rational numbers are number which can be expressed in form of ,

Where p and q are integers and q≠0

⇒ 0 divides and multiply by any number gives 0

As 0 has infinite number of factors

Here, p & q are integers and q ≠ 0 and p & q have no common factor other than 1

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