Quantitative Aptitude - Arithmetic Ability Questions

If a -­ b = 6 and ab =16, then a3 -­ b3 is

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 12% per annum is Rs 900. What is the value of given sum (in Rs)?

Given that the polynomial (x2+ ax+ b)leaves that same remainder when by (x –1) or (x + 1) What are the values of a and b respectively?

Of the 3 numbers whose average is 40, the first is 1/3 rd the sum of other 2. What is the first number?

The mean score in a test of the 12 boys in a class was 16 while the overall mean of the 30 students in the class was 18.1. What was the mean score of the girls?

The sum of three consecutive natural numbers each divisible by 5, is 225. The largest among them is

What is the slope of the line perpendicular to the line passing through the points (-5 , 1) and (-2 , 0)?

The co-ordinates of the centroid of a triangle ABC are (1 , -4). What are the co-ordinates of vertex C if co-ordinates of A and B are (3 , -4) and (0 , 5) respectively?