June 2020

Class 9 – Mathematics – RD Sharma Number Systems – Exercise 1.5

Class 9 – Mathematics – RD Sharma Number Systems – Exercise 1.4

Class 9 – Mathematics – RD Sharma Number Systems – Exercise 1.3

Class 9 – Mathematics – RD Sharma Number Systems – Exercise 1.2

Class 9 – Mathematics – RD Sharma Number Systems – Exercise 1.1

Class 9 – Mathematics Probability – Exercise 15.1 Exercise 15.1 Question : 1:  In an ODI match, a wicket keeper drops a catch 6 times out of 30 catches he gets. Find the probability of the wicketkeeper not dropping a…

Class 9 – Mathematics Statistics – Exercise 14.3 Exercise 14.3 Question : 1 : A survey conducted by an organisation for the cause of illness and death among the women between the ages 15 – 44 (in years) worldwide, found…

Class 9 – Mathematics Statistics – Exercise 14.2 Exercise 14.2 Question : 1: The blood group record of 30 pupil of standard 9th are recorded in a following data: A, O, AB, B, O, O, O, A, B, B, O,…

Class 9 – Mathematics Statistics – Exercise 14.1 Exercise 14.1 Question : 1 : Give 5 scenarios of day to day life from which any type of data can be collected. Answer : Daily life activities from where data can…

Class 9 – Mathematics Surface Areas and Volumes – Exercise 13.9 Question : 1 : A wooden bookshelf has external dimensions as follows: Height = 110 cm, Depth = 25 cm, Breadth = 85 cm (see Fig.). The thickness of…

Class 9 – Mathematics Surface Areas and Volumes – Exercise 13.8 Exercise 13.8 Question :1 : Find the volume of a sphere whose radius is (i) 7 cm                                                       (ii) 0.63 m Answer : (i) Here, radius (r) = 7 cm…

Class 9 – Mathematics Surface Areas and Volumes – Exercise 13.7 Exercise 13.7 Question :1 : Find the volume of the right circular cone with (i) radius 6 cm, height 7 cm                   (ii) radius 3.5 cm, height 12 cm. Answer…