introduction of the chapter.the number system.class 9 cbse maths book......................
Answers
Answer:
Ex 1.1 Class 9 Maths Question 1.
Is zero a rational number? Can you write it in the form \frac { p }{ q },where p and q are integers and q ≠0?
Solution:
Yes, zero is a rational number it can be written in the form \frac { p }{ q }.
0 = \frac { 0 }{ 1 } = \frac { 0 }{ 2 } = \frac { 0 }{ 3 } etc. denominator q can also be taken as negative integer.
Thus, the six rational numbers between 3 and 4 are
NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1 Q2a
Ex 1.1 Class 9 Maths Question 3.
Find five rational numbers between \frac { 3 }{ 5 } and \frac { 4 }{ 5 }.
Solution:
Since, we need to find five rational numbers, therefore, multiply numerator and denominator
by 6.
Ex 1.1 Class 9 Maths 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
∵ The collection of all natural numbers and 0 is called whole numbers.
(ii) False
∵ Negative integers are not whole numbers.
(iii) False
∵ Rational numbers are of the form p/q, q ≠ 0 and q does not divide p completely that are not whole numbers.
