Draw a bar chart for the number of students in a colleage:

On the occasion of deepawali festival each student of a class sends greetings cards to one another if the postman deliver 1640 greeting cards to the students of this class then the number of students in the class is

In a school 80 students like chocolate , 40 like coffee if the number of he student does not like any of hem is equal to the number of student who like both of them then what is the total number of students in the school ?

At the present the sum of the number of students in All M.S.K in a district is 3993. if the number of students increased in a year was 10% of its previous year, calculate the sum of the number of students 3 years before in all the M.S.K in the district.

30 students of my class were present. Total number of students in our class is 60. Let's find what percent of students have come to my class.

At present the sum of the number of students in all the secondary institutions in a district is 3993. If the number of students increased in a year was 10% of that in the previous year, then find the sum of the number of students in all the secondary institutions in the districts 3 years before?

As a result of sarba Siksha Abhiyan, the students leaving the school before completion, the students are readmitted, so the students in a year is increased by 5% in comparison to its previous year. If the number of such readmitted students in a district be 3,528 in the present year, then find the number of students readmitted 2 year before in this manner.

In the speech of a professor , the number of students present in the speech directly varies with his capacity of explaining the subjects abnd inversely with the number of speech delivered . If 54 students were present in 10 speeches of professor A , then what number of students will present in the speech delivered by B when the capacity of explanation of professor B is 3 times then that of A ?

Answer the following questions in short: Give the procedure of Construction of control charts for number of defectives, in both cases when standards are given and not given.

The number of students in a class is 60 . The average of the ages of the boy-students is 14.5 years and the average of the ages of the girl-students is 16 years . If the collective average of the total students be 15 years , then find the number of boy-students and the number of girl-students.

300 marbels are distributed equally among a certain number of students. Had there been 10 more students, each would have received one marbel less. Find the number of students____