In School A, 1250 students are arranged in the largest possible solid square formation. How many students are left unarranged?

A gardener plants 1000 trees in a square grid with equal rows and columns. How many trees remain after forming the largest possible square?

In a row of boys, A is 15th from the left and B is fourth from the right. There are three boys between A and B, C is first left of A. What is the position of C from the right?

There are 5 routes to go from Prayagraj to Patna and 4 routes to go from Patna to Kolkata. How many ways are possible for going from Prayagraj to Kolkata via Patna?

Which of the following fraction sets is arranged in descending order?

How many 3s are there in the following sequence which are neither preceded by 6 nor immediately followed by 9? 9 3 6 6 3 9 5 9 3 7 8 9 1 6 3 9 6 3 9