In a large hall there are `4x^2` rows of benches. If each row has `5x^2y^3` benches and each bench can accommodate `x y^2` person, determine the total number of persons if its is full up to its capacity.

In a class-room there are 2x rows of benches. If each row has 3x y benches and each bench can accommodate x students, determine the number of students in the room if it is full up to its capacity.

If there are x rows of chairs and each row contains x^2 chairs. Determine the total number of chairs.

In a room there are x^2 rows of chairs and each row contains 2x^2 chairs. The total number of chairs in the room is (a) 2x^3 (b) 2x^4 (c) x^4 (d) (x^4)/2

To get a maximum current in an external resistance of 8Omega one can use m rows of n cells (connected in series), connected in parallel. If the total number of cells is 64 each having an e.m.f. of 2V and interanl resistance of 2Omega , then calculate the number of cells in each row and number of rows.

If there are x chairs in a row, then the number of persons that can be seated in 8 rows are (a)64 (b)x+8 (c)8x (d)none of these

Find the total number of arrangements x^3y ^2z ^4 of the letters in the expression when written at full length.

The vertical height of a conical tent is 42 dm and the diameter of its base is 5.4 m. Find the number of persons it can accommodate if each person is to be allowed 29.16 cubic dm.

How many persons can be accommodated in a big - hall of dimensions 40 m . 25m and 15 m. Assuming that each person requires 5 m ^(3) of air?

Find the centre and radius of each of the following circle: x^2+y^2-4x+6y=5