NCERT Class 9 Maths Chapter 1 Number Systems Solutions
NCERT Class 9 Maths Chapter 1 Number Systems Solutions Exercise 1.1 Q.1. Is zero a rational number? Can you write in the form p/q, where p and q are integers and q ≠ 0. Ans: Yes, zero is a rational number and it can be written in the form of p/q as 0 = 0/1 here p = 0 and q = 1 Notice that q can be any number you wish. [∵ 0 = 0/2 = 0/4 etc.] Q.2. Find six rational numbers between 3 and 4 Ans: Let a = 3, and b = 4 Rational number lying between 3 and 4 is a+b/2 i.e. 3+4/2 = 7/2 Now rational number between 3 and Then required six rational numbers between 3 and 4 are. 7/2, 13/4, 15/4, 27/8, 29/8, 31/8 We want to find all six at one go. Since we want 6 numbers, so write. 3 = 21/6+1 = 21/7 and 4 = 28/6+1 = 28/7 Now six rational numbers between 3 and 4 are 22/7, 23/7, 24/7, 25/7, 26/7, 27/7 Q.3. Find five rational numbers between 3/5 and 4/5 Ans: To find five rational numbers between 3/5 and 4/5, we take 3/5 and 4/5 as a rational number with denom...