NCERT Solutions Class 9 Maths Chapter 1 Number Systems
Here on ncertsolustions.blogspot.com, you can access to NCERT Book Solutions in free pdf for Maths for Class 9 so that you can refer them as and when required. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.
Let's begin
Exercise 1.1
Q.1: Is zero a rational number? Can you write it in the form p/q, where p and q are integers and q ≠ 0?
Ans : Zero is a rational number as it can be represented as
0/1 or 0/2 or 0/3 etc.
Q.2: Find six rational numbers between 3 and 4.
Ans : There are infinite rational numbers in between 3 and 4.
3 and 4 can be represented as 24/8 and 32/8 Therefore, rational numbers between 3 and 4 are
25/8,
26/8,
27/8,
28/8,
29/8,
30/8
Q.3: Find five rational numbers between 3/5 and 4/5
Ans :There are infinite rational numbers between 3/5 and 4/5
Therefore,
rational numbers between 3/5 and 4/5.
19/30,
20/30 ,
21/30 ,
22/30,
23/30
Q.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
Ans : (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. For Example :1/5 is rational number but not a whole number.
BYE , catch you later
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