Telangana SCERT Solution Class IX (9) Math Chapter 1 Real Numbers Exercise 1.1
(1.) (a) Write any three rational numbers
Solution: 1/3, 1/4, 5
(b) Explain rational number in your own words.
Solution: Rational numbers are any number that can be expressed in the form of a fraction considering the denominator of the fraction itself is not equal to 0.
example -> 1/b, where a = any integer or natural number. b ≠ 0.
(2.) Give one example each to the following statements.
(i.) A number which is rational but not an integer
Solution: 3/2, since 3/2 is a fraction and cannot be represented in the form of a single whole number.
(ii.) A whole number which is not a natural number
Solution: 0, Zero is the only number that separates whole number with natural number, all positive integers are natural number whereas, all natural numbers along with zero are whole number.
(iii.) An integer which is not a whole number
Ans. -3, Any integer that is a negative number is not a whole number.
(iv.) A number which is natural number, whole number, integer and rational number.
Ans. 4, any positive number which is not a fraction are all of the above mentioned in the question.
(v.) A number which is an integer but not a natural number
Solution: 0, Any integer number starting from zero and beyond in the negative numbers bracket are not a natural number.