A parallelogram is cut by two sets of m lines parallel to the sides, the number of parallelograms thus formed is

The parallelogram is cut by two sets of m lines parallel to its sides. The numbers parallelogram thus formed, is

The parallelogram is cut by two sets of m lines parallel to its sides. The numbers parallelogram thus formed, is

The parallelogram is cut by two sets of m lines parallel to its sides. The numbers parallelogram thus formed, is

The parallelogram is cut by two sets of m lines parallel to its sides.The numbers parallelogram thus formed,is

A parallelogram is cut by two set of n parallel lines, parallel to the sides of the parallelo-gram. The number of parallelograms formed is

If 5 parallel straight lines are intersected by 4 parallel straight, then the number of parallelograms thus formed is