Quantitative Aptitude - Arithmetic Ability Questions

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

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

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?

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

Select the odd word/letters/number/number pair from the given alternatives.

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

What is the value of (1+cosA)/(1-­cosA)?