Quantitative Aptitude - Arithmetic Ability Questions

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

The curved surface area and the diameter of a right circular cylinder are 352 cm² and 14 cm respectively. Find its height (in cm).

The average of three numbers is 6. The average of the first two is 5 while the average of the last two is 8. The three numbers are:

If 7 spiders make 7 webs in 7 days , then 1 spider will make 1 web in how many days ?

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?

The effective annual rate of interest corresponding to a nominal rate of 19% per annum payable half­yearly is:

The interest earned on Rs. 3675 at the rate of 4% simple interest per annum for 2 years will be

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