Quantitative Aptitude - Arithmetic Ability Questions

A square park having a side 22 m has two roads each 2 m wide running in the middle of it and parallel to its length and breadth. What will be the cost of gravelling the path at the rate of Rs.100/sq.m?

What will come in the place of the question mark (?) in the following number series?305, 338, 404, 503, 635 , (?)

By what least number should 1200 be multiplied so that it becomes a perfect square?

If a - b = 5 and a2 + b2 = 97, ab = ?

A boat goes 15 km upstream and 10 1/2 km down stream in 3 hrs 15 min. It goes 12 km upstream and 14 km downstream in 3 hrs. What is the speed of the boat in still water?

The pair of linear equations 3x + y = 1 and px + 2y = 5 has no finite solution if

The length of one side and the diagonal of a rectangle are 8 cm and 17 cm respectively. Find its area (in cm2).

In ΔDEF measure of angle E is 90 deg. If cotD = 8/15, and DE = 16cm, then what is the length (in cm) of side EF?