Class 9 Maths Chapter 1 Exercise 1.4 Number Systems in Hindi and English Medium by Tiwari Sir.

Class 9 Maths Chapter 1 Exercise 1.4 Number Systems in Hindi and English Medium by Tiwari Sir. Visit to https://www.tiwariacademy.com/ncert-s... and get all the videos and text format solutions. #class9 #maths #class9maths #class9th #ncertsolutions #hindimedium #tiwariacademy #cbse #ncert #ganit #ganitlearning #9thmathschapter1 #9thmathsonlineclass #kaksha9ganit #kaksha9kipadhai #mathsbytiwarisir 00:03 Question 1. Classify the following numbers as rational or irrational: (i) 2 − √5 (ii) (3 + √23) − √23 (iii) 2√7/7√7 (iv) 1/√2 (v) 2π 02:20 Question 2. Simplify each of the following expressions: (i) (3 + √3) (2 + √2) (ii) (3 + √3) (3 − √3) (iii) (√5 + √2)^2 (iv) (√5 − √2) (√5 + √2) 05:06 Question 3. Recall, π is defined as the ratio of the circumference (say c) of a circle to its diameter (say d). That is, π = c/d⋅ This seems to contradict the fact that π is irrational. How willyou resolve this contradiction? 06:58 Question 4. Represent √9.3 on the number line. 09:15 Question 5. Rationalise the denominators of the following: (i) 1/√7 (ii) 1/(√7 − √6) (iii) 1/(√5 + √2) (iv) 1/(√7 − 2).