Chapter 15 Probability Ex 15.2 Question 1. Two customers Shyam and Ekta are visiting a particular shop in the same week (Tuesday to Saturday). Each is equally likely to visit…

Chapter 15 Probability Ex 15.1 Question 1. Complete the following statements: (i) Probability of an event E + Probability of the event ‘not E’ = ……… (ii) The probability of…

Chapter 14 Statistics Ex 14.4 Question 1. The following distribution gives the daily income of 50 workers of a factory. Convert the distribution above to a less than type cumulative…

Chapter 14 Statistics Ex 14.3 Question 1. The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median, mean and mode of…

Chapter 14 Statistics Ex 14.2 Question 1. The following table shows the ages of the patients admitted in a hospital during a year. Find the mode and the mean of…

Chapter 14 Statistics Ex 14.1 Question 1. A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following…

Chapter 13 Surface Areas and Volumes Ex 13.4 Unless stated otherwise, take π = 22/7 Question 1. A drinking glass is in the shape of a frustum of a cone of…

Chapter 13 Surface Areas and Volumes Ex 13.3 Unless stated otherwise, take π = 227 Question 1. A metallic sphere of radius 4.2 cm is melted and recast into the shape…

Chapter 13 Surface Areas and Volumes Ex 13.2 Unless stated otherwise, take π = 22/7 Question 1. A solid is in the shape of a cone standing on a hemisphere…

Chapter 13 Surface Areas and Volumes Ex 13.1 Question 1. 2 cubes each of volume 64 cm3 are joined end to end. Find the surface area of the resulting cuboid. Solution:…