Quantitative Aptitude - Arithmetic Ability Questions

What can be the maximum number of common tangent which can be drawn to two non-intersecting circles?

Assuming that the numbers in each of the following figures follow a similar pattern, select the option that can replace the question mark in figure B.

If √5 = 2.236, then √5/2 is

Two ships are sailing in the sea on the two sides of a light house. The angle of elevation of the top of the light house as observed from the two ships are 30° and 45° respectively. If the light house is 100m high, the distance between the two ships is :(take √3=1.73)

182/130 when written in the simplest form is:

The number of diagonals in a pentadecagon is

If X + Y = 19 and X - Y = 7, then XY = ?

The expenses of a person increase by Rs. 50000 for every month in February and March. If his expenses in January was Rs. 50000, calculate his average expenditure (in Rs.) from January to March.