KSEEB Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1

KSEEB Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1

Karnataka Board Class 9 Maths Chapter 1 Number Systems Ex 1.1

Question 1.
Is a zero a rational number? Can you write it in the form p/q, where p and q are integers and q ≠ 0 ? (p, q,ϵ Z, q ≠ 0)

Question 4.
State whether the following statements are true or false. Give reasons for your answers :
(i) Every natural number is a whole number.
Answer:
True. Because set of natural numbers belongs to a set of whole numbers.
∴ W = {0, 1, 2, 3 …………………….}

(ii) Every integer is a whole number.
Answer:
False. Because zero belongs to a set of integers. But -2, -3, -1 are not whole numbers.

(iii) Every rational number is a whole number.
Answer:
False. Because 1/2 is a rational number but not a whole number.

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