Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 2 and ab = 15, then what is the value of a3- b3?

The cost price of an article is x. It is marked up by 120%. It is sold at Rs 8800 after giving 20% discount. What is the value (in Rs) of x?

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

Diameter of a car wheel is 21 cm. A car driver moving at the speed of 66 km/hr takes 36 seconds to reach a destination. How many revolutions will the wheel make during the journey?

The effective annual rate of interest corresponding to a nominal rate of 15% per annum payable half-yearly is

In each of these questions, a question is given followed by information in three statements. You have to find out the data in which statement(s) is sufficient to answer the question and mark your answer accordingly. What are the marks scored by Abhijit in English?

I. Marks scored by Abhijit in Maths are more than his marks in Science by 20.

II. Total marks scored by Abhijit in Maths, Science and English are 198.

III. Marks scored by Abhijit in Science are more than his marks in English by 12.

The first and last terms of an arithmetic progression are 37 and ­18. If the sum of the series is 114, then it has how many terms?

If Cos θ = 35/37 , then what is the value of Cot θ?