Quantitative Aptitude - Arithmetic Ability Questions

What is the sum of the first 12 terms of an arithmetic progression if the first term is -19 and last term is 36?

Pick the odd one out from the following

The value of Sin 60 is

What is the area (in sq cm) of a regular hexagon of side 14 cm?

The heights of a cone and a cylinder are equal. The radii of their bases are in the ratio 2:1. The ratio of their volumes is:

Two regular polygons are such that the ratio between their number of sides is 1:2 and the ratio of measures of their interior angles is 3:4. Then the number of sides of each polygon are

ΔPQR is right angled at Q. If m∠R = 60o, then find the value of (secP - 1/√3) 

Find the value of p, if 2x -­ 4, 4x + p and 6x -­ 12 are in arithmetic progression.