RS Aggarwal Class 9 Solutions Chapter 15 Probability Ex 15A in PDF for Free Download Question 1. A coin is tossed 500 times and we get head : 285 times, tail : 215 times.When a coin is tossed at random, what is the probability of getting (i) a head ? (ii) a tail? Solution: Number of trials = 500 times Let E be the no. of events in each case, then ∴No. of heads (E1) = … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 15 Probability Ex 15A

# Class 9

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14H

RS Aggarwal Solutions Chapter 14 Statistics Ex 14H in PDF for Free Download Question 1.Find the mode of the following items : 0, 6, 5, 1, 6,4, 3, 0, 2, 6, 5, 6.Solution:Arranging the given data in ascending order :0, 0, 1, 2, 3, 4, 5, 5, 6, 6, 6, 6We see that 6 occurs in maximum times.Mode = 6 Ans. Question 2.Determine the mode of the following values of a variable. 23, 15, … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14H

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14G

RS Aggarwal Solutions Chapter 14 Statistics Ex 14G in PDF for Free Download Question 1.Find the median of(i) 2, 10, 9, 9, 5, 2,3,7, 11(ii) 15,6, 16, 8,22,21,9, 18, 25(iii) 20, 13, 18, 25, 6, 15, 21, 9, 16, 8, 22(iv) 7, 4, 2, 5, 1, 4, 0, 10, 3, 8, 5, 9, 2Solution:Arranging in ascending order, we get:2,2,3,5,7,9,9,10,11Here, number of terms is 9 which is odd.∴ Median = th term … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14G

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14F

RS Aggarwal Solutions Chapter 14 Statistics Ex 14F in PDF for Free Download Question 1.Find the mean of daily wages of 60 workers in a factory as per data given below :Solution: Question 2.The following table shows the weights of 12 workers in a factory :Solution: Question 3.The following data given the number of boys of a particular age in a class of 40 students.Calculate … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14F

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14E

RS Aggarwal Solutions Chapter 14 Statistics Ex 14E in PDF for Free Download Question 1.The mean mark obtained by 7 students in a group is 226 If the marks obtained by six of them are 340, 180, 260, 56, 275 and 307 respectively, find the marks obtained by the seventh student.Solution:Mean marks of 7 students = 226∴Total marks of 7 students = 226 x 1 = 1582Marks obtained by 6 of … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14E

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14D

RS Aggarwal Solutions Chapter 14 Statistics Ex 14D in PDF for Free Download Question 1.Find the arithmetic mean of(i) The first eight natural numbers.(ii) The first ten odd numbers.(iii) The first five prime numbers.(iv) The first six even numbers.(v) The first seven multiples of 5.(vi) All the factors of 20.Solution:(i) First eight natural numbers are 1, 2, 3, 4, 5, 6, 7, 8∴ … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14D

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14C

RS Aggarwal Solutions Chapter 14 Statistics Ex 14C in PDF for Free Download Question 1.The daily wages of 50 workers in a factory are given below :Solution:It is clear that the given frequency distribution is in exclusive form, we represent the daily wages (in rupees) along x-axis and no. of workers along y-axis. Then we construct rectangles with class intervals as bases and … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14C

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14B

RS Aggarwal Solutions Chapter 14 Statistics Ex 14B in PDF for Free Download Question 1.The following table shows the number of students participating in various games in a school.Draw a bar graph to represent the above data.Solution:We shall take the game along x-axis and number of students along y-axis. Question 2.On a certain day, the temperature in a city was recorded as … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14B

## RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14A

RS Aggarwal Solutions Chapter 14 Statistics Ex 14A in PDF for Free Download Question 1.Define statistics as a subject.Solution:Statistics is a science which deals with the collection, presentation, analysis and interpretations of numerical data. Question 2.Define some fundamental characteristics of statistics.Solution:(i) Numerical facts alone constitute data(ii) Qualitative … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 14 Statistics Ex 14A

## RS Aggarwal Solutions Class 9 Chapter 13 Volume and Surface Area Ex 13D

RS Aggarwal Solutions Chapter 13 Volume and Surface Area Ex 13D in PDF for Free Download Question 1.Find the volume and surface area of a sphere whose radius is :(i) 3.5 cm (ii) 4.2 cm (iii) 5mSolution:(i) Radius of sphere = 3.5cm(a) Volume = πr3 Question 2.The volume of a sphere is 38808 cm3 . Find its radius and hence surface areaSolution:Let r be the radius of the … [Read more...] about RS Aggarwal Solutions Class 9 Chapter 13 Volume and Surface Area Ex 13D