Quantitative Aptitude - Arithmetic Ability Questions

What are the co-ordinates of the centroid of a triangle, whose vertices are A(2 , 5), B(-4 , 0) and C(5 , 4)?

A cone of height 12 cm and diameter 10 cm is mounted on a hemisphere of the same diameter. What is the volume of the solid thus formed?

When n is divided by 4, the remainder is 3. The remainder when 2n is divided by 4 is:

Calculate the difference between the square of the largest and smallest two-digit prime numbers.

The number of sides of a regular polygon whose exterior angles are each 72 deg is

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

ΔDEF is right angled at E. If m∠F = 30 deg, then find the value of (sinD - 1/3).

Compute : (50 + 0.5 x 20) / 0.7