Quantitative Aptitude - Arithmetic Ability Questions

If 2+aa + 2+bb + 2+cc = 4, then the value of ab+bc+caabc is

a and b are irrational numbers such that a+b = q is a rational number; then a­b is

(1132 + 1152 + 1172 - 113 x 115 - 115 x 117 - 117 x 113) is equal to

The mean of 10 observations is 13. Two more observations are included and the new mean becomes 14. The mean of two new observations is

Two cars travel from city A to city B at a speed of 60 and 108 km/hr respectively. If one car takes 2 hours lesser time than the other car for the journey, then the distance between City A and City B?

If √(1 - cos2A)/cosA = x, then the value of x is

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

What is the difference (in Rs) in Compound interest earned in 1 year on a sum of Rs 25,000 at 20% per annum compounded semi-annually and annually?