Quantitative Aptitude - Arithmetic Ability Questions

The smallest number that must be subtracted from 2800 so that the obtained number is a perfect square is

If the time increases by 5 years, then simple interest increases by Rs 3000 on a sum of Rs 5000. What is the rate (in percentage) of interest per annum?

The arithmetic mean of the marks scored by students of a class is 58. 20% of them secured a mean score of 60. The mean score of another 30% of the students was 40. The mean score of the remaining students is

A sum of Rs. 69 was divided between Jason and Ruhana in the ratio 1:2. How much money did Ruhana get?

If x - 2y = 2 and 3x + y = 20, then the value of (x,y) is

Find the 4th proportional to 9, 17 and 27.

What is the value of cos 4π/3?

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