Quantitative Aptitude - Arithmetic Ability Questions

What is the mean of the first five Triangular Numbers?

The average revenues of 7 consecutive years of a company is Rs 71 lakhs. If the average of first 4 years is Rs 66 lakhs and that of last 4 years is Rs 78 lakhs. What is the revenue for the fourth year.

How much does one need to add to 2/3 to obtain 3/2?

A thief is stopped by a policeman from a distance of 350 metres. When the policeman starts the chase, the thief also starts running. Assuming the speed of the thief as 7 km/h and that of police man as 12 km/h, how far the thief would have run, before he is over taken?

In the given figure, PQR is a right angled triangle at Q. If PQ = 35 cm and QS = 28 cm, then what is the value (in cm) of SR?

If (cosecA -­ 1)/(cosecA + 1) = x, then the value of x is

If x + 2(3-5x) > -1 - 2x < 5 - x/3; then the value of x is

If sum of Rs.1000 amount to Rs.1331 in 3 years, compounded annually. Then, find the rate of interest per annum?