Chapter 15 Statistics Set 15.2
Chapter 15 Statistics Set 15.2 Question 1. The height of 30 children in a class is given in centimeters. Draw up a frequency table of this data. 131, 135, 140,…
Chapter 15 Statistics Set 15.1
Chapter 15 Statistics Set 15.1 Question 1. The daily rainfall for each day of a week in a certain city is given in millimeters. Find the average rainfall during the…
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.4
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.4 Question 1. Factorize the following expressions: Solution: i. p² – q² Here, a = p, b = q ∴ p²…
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.3
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.3 Question 1. Factorise the following expressions and write them in the product form. i. 201a³b² ii. 91xyt² iii. 24a²b² iv.…
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.2
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.2 Question 1. Use the formula to multiply the following: i. (x + y)(x – y) ii. (3x – 5)(3x +…
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.1
Chapter 14 Algebraic Formulae – Expansion of Squares Set 14.1 Question 1. Expand: Solution: i. (5a + 6b)² Here, A = 5a and B = 6b (5a + 6b)² =…
Chapter 13 Pythagoras Theorem Set 13.2
Chapter 13 Pythagoras Theorem Set 13.2 Question 1. Find the Pythagorean triplets from among the following sets of numbers: i. 3,4,5 ii. 2,4,5 iii. 4,5,6 iv. 2,6,7 v. 9,40,41 vi.…
Chapter 13 Pythagoras Theorem Set 13.1
Chapter 13 Pythagoras Theorem Set 13.1 Question 1. In the figures below, find the value of ‘x’. Solution: i. In ∆LMN, ∠M = 90°. Hence, side LN is the hypotenuse.…
Chapter 12 Perimeter and Area Set 12.4
Chapter 12 Perimeter and Area Set 12.4 Question 1. Find the total surface area of cubes having the following sides: i. 3 cm ii. 5 cm iii. 7.2 m iv.…
Chapter 12 Perimeter and Area Set 12.3
Chapter 12 Perimeter and Area Set 12.3 Question 1. A page of a calendar is 45 cm long and 26 cm wide. What is its area? Solution: Area of page…