Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd letters from the given alternatives.

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

To cover a distance of 252 km in 2.5 hours what should be the average speed of the car in meters/second?

Solve : 8,23,199.98 × 99.92 = ? × 80,000

A sum of 2,000, invested at the rate of 8.5% simple interest per annum for 6years will yield an interest of

10 people can build a wall in 12 days. Six people, each only half as efficient as those in the first group, will be able to complete 3/5 of such a wall in

The first and last terms of an arithmetic progression are 23 and ­42. What is the sum of the series if it has 14 terms?

A water tank is 2/5 th full. Inlet A can fill the tank in 12 minutes while an outlet pipe B can empty it in 6minutes. If both the pipes are open, how long will it take to empty or fill the tank completely?