Quantitative Aptitude - Arithmetic Ability Questions

Find the greatest number that will divide 390, 495 and 300 without leaving a remainder

In how many months will Rs 8,000 yield Rs 2,648 as compound interest at 20% per annum compounded semi-annually?

A sum of Rs 4000 becomes Rs 6000 in 1 year at a certain rate of compound interest. What will be the sum (in Rs) after 4 years?

Of the four numbers whose average is 91, the first is 3/10 times the sum of other three. The first number is:

A bus runs at 50 kmph. If the speed is increased by 10 kmph, it will cover 20 km more in the same time. Find the actual distance covered?

Find the unit place digit in 71 x 72 x 73 x 74 x 76 x 77 x 78 x 79.

If x2+ x = 19, then what is the value of (x + 5)2+ [1/(x + 5)2]?

What is the value of (1/√2) Cot 45° + (1/√3) Cosec 60°?