Ranjana wants to distribute 540 oranges among some students. If 30 students were more, each would get 3 oranges less. Find the number of students.

A certain amount is equally distributed among certain number of students. Each would get Rs. 2 less if 10 students were more and each would get Rs. 6 more if 15 students were less. Find the number of students and the amount distributed.

In how many ways can 5 prizes be distributed among four students when every student can take one or more prizes

A student passes an examination if he secures a minimum in each of the 7 subjects. Find the number of ways a student can fail.

In the orange garden of Mr.Madhusudan there are 150 orange trees. The number of trees in each row are 5 more than that in each column. Find the number of trees in each row and each column.

In a school hostel, there are 100 students out of which 60 drink tea, 50 drink coffee and 30 drink both tea and coffee. Find the number of students who do not take tea or coffee.

In the orange garden of Mr. Madhusudan there are 150 orange trees. The number of tree in each row is 5 more than that in each column. Find the number of trees in each row and each column with the help of following flow chart.

In a group photograph, 6 teachers and principal are in the first row and 18 students are in the second row. There are 12 boys and 6 girls among the students. If the middle position is reserved for the principal and if no two girls are together, find the number of arrangements.