Quantitative Aptitude - Arithmetic Ability Questions

What is the sum of the first 11 terms of an arithmetic progression if the first term is -31 and last term is 29?

The order of rotational symmetry of a rectangle is

The shadow of a tower when the angle of elevation of the sun is 45°, is found to be 10 m longer than when it was 60° . The height of the tower is

What is the difference between the maturity values, if Rs. 12500 is invested for 2 years at 20% per annum simple interest and compound interest?

Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?

A batsman makes a score of 111 runs in the 10th match and thus increases his average runs per match by 5. What will be his average after the 10th match?

Two equal sum are invested in two different schemes. One scheme gives simple interest and the other gives compound interest (annual compounding).The sum of interest obtained after 2 years from both the schemes is Rs 3717. If both scheme have 13% per annum interest rate, then what is the first year interest (in Rs) for simple interest scheme?

In ΔPQR, ∠QPR = 45° and the bisectors of ∠PQR and ∠PRQ meets at O. What is the value (in degrees) of ∠QOR?