Quantitative Aptitude - Arithmetic Ability Questions

What is the mean of the first five Triangular Numbers?

Which among the following is true for the given numbers?

The simplification value of 735+2-552+7+227+5 is

Find out the odd word/letters/number pair from the given alternatives

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

The distance between the points (7,7) and (k,-5) is 13. Find k?

A businessman imported Laptops, worth Rs 210000, Mobile phones worth Rs 100000 and Television sets worth Rs 150000. He had to pay 10% duty on laptops, 8% on Phones and 5% on Television sets as a special case. How much total duty (in Rupees) he had to pay on all items as per above details?

If the difference between the compound interest and the simple interest on a certain sum at the rate of 5% per annum for 2 years is Rs. 20, then the sum is