Quantitative Aptitude - Arithmetic Ability Questions

The midpoints of AB and AC of a triangle ABC are X and Y respectively. If BC+XY=12 units, then BC­XY is

The curved surface area of a hemisphere is 27.72 sq cm and volume is 19.404 cubic cm, find its radius?

For the figure given below, find the value (in degrees) of 2∠A + ∠B.

The angle of elevation of the top of a tower at a distance of 25 m from its foot is 60 deg. The approximate height of the tower is

If tanα = 2 - 1, then the value of  tanα - cotα = ?

One of four words is a class of which the other three belong. Identify the class.

What is the effective discount (in %) on two successive discounts of 20% and 10%?

Amit is five years older than Vaibhav at present. After four years the ratio of their age will be 5:4. What is Amit age at present (in years)?