The probability that a student entering the university will graduate is 0.4. Find the probability that out of 3 students of the University: none will graduate.
The probability that a student entering the university will graduate is 0.4. Find the probability that out of 3 students of the University: only one will graduate.
There are 20 students in a Chemistry class and 30 students in a Physics class. Find the number of students which are either in Physics class or Chemistry class in the following case : the two classes meet at different hours and ten students are rolled in both the subjects.
The ages of the students of a class form an A.P. whose common difference is 4 months. If the youngest student is 8 years old and the sum of the ages of all the students of the class 1s 168 years, find the number of students in the class.
The blood groups of 30 students of Class VIII are recorded as follows:Use this table to determine the probability that a student of this class, selected at random, has blood group AB.
There are 4 students for physics, 6 students for chemistry and 7 students of mathematics gold medal. In how many ways one of these gold medals be awarded?
5929 students are sitting in an auditorium in such a manner that there are as many as students in a row as there are rows in the auditorium. How many rows are there in the auditorium?
The distribution below gives the weights of 30 students of a class. Find the median weight of the students.
