what you know
(1) In the given figure, mark the numbers as Natural (N), Whole
(W), Integers (I), Rational (Q) and Irrational (P).
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Answers
Answer:
Is zero a rational number? Can you write it in the form  where p and q are integers and q ≠ 0?
Ans. Yes, zero is a rational number. We can write it in the form 

2. Find six rational numbers between 3 and 4.
Ans. We know that there are an infinite number of rational numbers between two rational numbers.
Therefore, six rational numbers between 3 and 4 can be:
Let x = 3 and y = 4, also n = 6

(x + d), (x + 2d), (x + 3d), (x + 4d), (x + 5d) and (x + 6d).
⇒ The six rational numbers between 3 and 4 are:

3. Find five rational numbers between 

⇒ The Five rational numbers between ‘x’ and ‘y’ are:
(x + d); (x + 2d); (x + 3d); (x + 4d)
and (x + 5d).

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 statement
[ ⇒ The collection of all natural numbers and 0 is called whole numbers]
(ii) False statement
[ ⇒ Integers such as –1, –2 are non-whole numbers]
(iii) False statement
[ ⇒ Rational number  is not a whole number]