- Natural and Whole Number
- |
- Integers
- |
- Rational and Irrational Numbers
- |
- Real Numbers
- |
- Laws of exponents
- |
- What is Number Line
- |
- successive Magnification

In this page we have ** NCERT book Solutions for Class 9th Maths:Number system** for
EXERCISE 1 . Hope you like them and do not forget to like , social share
and comment at the end of the page.

**Question 1**

Is zero a rational number? Can you write it in the form p/q

, where *p *and *q *are integers and *q not equal to *0?

**Solution:**

Yes. Zero is a rational number as it can be represented as 0/1 or 0/2…

**Question 2**

Find six rational numbers between 3 and 4.

**Solution**

The six rational numbers

3.1 , 3.2, 3.3, 3.4, 3.5, 3.6

**Question 3**

Find five rational numbers between 3/5 and 4/5

**Solution:**

We need to find five rational numbers

So we multiply the denominator and numerator by (5+1) both the numbers

3/5= 18/30

4/5=24/30

So rational numbers will be in increasing order

19/30

20/30

21/30

22/30

23/30

**Question 4**

State whether the following statements are true or false. Give reasons for your answers.

(i) Every natural number is a whole number.

(ii) Every integer is a whole number.

(iii) Every rational number is a whole number

**Solution:**

(i) True; since the collection of whole numbers contains all natural numbers.

(ii) False; as integers may be negative but whole numbers are positive. For example: −3 is an integer but not a whole number.

(iii) False; as rational numbers may be fractional but whole numbers may not be

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