Each x students of class V is given y books. But each x students of class VI is given (y+3) books. Again each (x+11) students of class VII is given (y+10) books. Calculate to find, how many books were given to the students of class V, VI and VII. Also find the total number of books given out in their classes.

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.

Today is the Foundation day of our school. Each student of class five will be given pencil and eraser worth 5 rupees. Each student of class six will be given compass worth of 10 rupees. There are x students present in class five, but number of students present in class six is 8 less than the number present in class five. Calculate the amount of money spent for pencils and erasers and also the amount spent for compasses.

The frequency distribution of the heights (in cm) of 100 students of class X in a school .Find the average height of the students .

An educational trip to Gadiyara had been arranged by our school for collection environment related date. 32 studens of class six, 36 students of class seven and 28 students of class eight are going for the trip, few small school buses have been arranged so that each bus must accoumodate equal number of studentsfrom the three classes. Let us find ,total number of buses required and number of students each but will accomodate.

The marks obtained in mathematics by 30 students of Class X of a certain scholl are given in table the below. Find the mean of the marks obtained by the students.

In the given triangles, find out x, y and z.

Find the number of ways in which 22 different books can be given to 5 students, so that two students get 5 books each and all the remaining students get 4 books each.

The graphs y=p(x) are given in the figure below, for some polynomials p(x). In each case, find the number of zeroes of p(x) .

If the median of the given data is 32, then find the value of x and y when total frequency is 100.

The number of ways of distributing 3 identical physics books and 3 identical mathematics books among three students such that each student gets at least one books is