There are seven student in a class with avarage score 62. A student fails if he gets less than 50, then the worst case that maximum number of students fails in the class if the given variance is 30 is _____

The class, in which the marks of maximum number of students lies, is

Number of students present in a class of 50 students Then the random variable is

The students of a class donated a sum of Rs 2, 209. If each student donated as many rupees as the number of students in the class, then the number of students in the class is

In a class, there are 225 students. Which of the following cannot be the ratio of the number of sutdents passed to the number of students failed?

If the average weight of the students of a class is 15kg, the average weight of the students of another class is 30kg and average weight of the students of both the classes is 25kg, then find the ratio of the number of students of the first class to the another class.

42% of the total number of student passed in a class test. How many students failed, if the total number of students in the class is 1450 ?

The students of a class donated a sum of Rs 2,809 to the Fund. Each student donated as many rupees as the number of students in the class. The number of students in the class is:

Direction: There are 1250 total students in 5 different classes in a school. The number of students in class I is 50 less than the number of students in class II. The number of class IV students is 50 more than the number of students in class II. The average number of students in class III and class V is 250. The number of students in class III is 10% less than the number of students in class I. The total number of students of class IV and the number of students of class II is