Quantitative Aptitude - Arithmetic Ability Questions

What is the ratio of radius of incircle and circumcircle for an equilateral triangle with an area of 22√3 sq. units?

In the following question, select the odd letters from the given alternatives.

In the following question, select the odd word pair from the given alternatives.

If a3 + a - 1 = 0 then find the value of a6 + a4 + a - 2

What is the equation of the line which passes through the points (3,­2) and (5,3)?

In the following question, select the related number from the given alternatives.
 
47 : 57 : : 93 : ?

Volume of a cube is 512 cubic cm, find its total surface area? (Take π = 22/7)

A tap can fill a tank in 50 minutes. If the tank has a leakage which alone is capable of emptying the tank in 2.5 hours, the tank will now be filled in