Sujeet Kumar

Question 1.Observe the following frequency polygon and write the answers of the questions below it.i. Which class has the maximum number of students?ii. Write the classes having zero frequency.iii. What is the class mark of the class, having frequency of 50 students?iv. Write the lower and upper class limits of the class whose class mark … Read more

Question 1.Draw a histogram of the following data.Solution: Question 2.The table below shows the yield of jowar per acre. Show the data by histogram. Solution:   Question 3.In the following table, the investment made by 210 families is shown. Present it in the form of a histogram. Solution: Question 4.Time allotted for the preparation of an … Read more

Question 1.The following table shows the information regarding the milk collected from farmers on a milk collection centre and the content of fat in the milk, measured by a lactometer. Find the mode of fat content.Solution: Here, the maximum frequency is 80.∴ The modal class is 4 – 5.L = lower class limit of the … Read more

Question 1.The following table shows classification of number of workers and the number of hours they work in a software company. Find the median of the number of hours they work.Solution: Cumulative frequency which is just greater than (or equal) to 500 is 650.∴ The median class is 10 – 12.Now, L = 10, f … Read more

Question 1.The following table shows the number of students and the time they utilized daily for their studies. Find the mean time spent by students for their studies by direct method.Solution: ∴ The mean of the time spent by the students for their studies is 4.36 hours. Question 2.In the following table, the toll paid … Read more

Question 1.Choose the correct alternative answer for each of the following questions. i. Which number cannot represent a probability?(A)  2/3(B) 1.5(C) 15%(D) 0.7Answer:The probability of any 0 to 1 or 0% to 100%. event is from(B) ii. A die is rolled. What is the probability that the number appearing on upper face is less than … Read more

Question 1.If two coins are tossed, find the probability of the following events.i. Getting at least one head.ii. Getting no head.Solution:Sample space,S = {HH, HT, TH, TT}∴ n(S) = 4 Question 2.If two dice are rolled simultaneously, find the probability of the following events.i. The sum of the digits on the upper faces is at … Read more

Question 1.Write sample space ‘S’ and number of sample points n(S) for each of the following experiments. Also write events A, B, C in the set form and write n(A), n(B), n(C). i. One die is rolled,Event A: Even number on the upper face.Event B: Odd number on the upper face.Event C: Prime number on … Read more

Question 1.How many possibilities are there in each of the following?i. Vanita knows the following sites in Maharashtra. She is planning to visit one of them in her summer vacation. Ajintha, Mahabaleshwar, Lonar Sarovar, Tadoba wild life sanctuary, Amboli, Raigad, Matheran, Anandavan.ii. Any day of a week is to be selected randomly.iii. Select one card … Read more

i. If the Face Value of a share is ₹ 100 and Market value is ₹ 75, then which of the following statement is correct?(A) The share is at premium of ₹ 175(B) The share is at discount of ₹ 25(C) The share is at premium of ₹ 25(D) The share is at discount of … Read more