Quantitative Aptitude - Arithmetic Ability Questions

A sum becomes Rs 1392 in 2 years and Rs 1488 in 3 years at simple interest. What is the rate (in percentage) of interest per annum?

A sum of Rs 800 becomes Rs 1000 in 2 years at simple interest. What is the per annum rate of interest (in percent)?

Which of the following numbers is not a prime number?

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

If a2+1=9a, (a≠0) then the value of a2+1a2 is

If (-1/2) * ( x - 5) + 3 = -5/2, then what is the value of x?

The base of a triangle is half the base of a parallelogram having the same area as that of the triangle. The ratio of the corresponding heights of the triangle to the parallelogram will be

What is the area (in square units) of the figure enclosed by the x-axis, the y-axis and the line x + 2y = 6 ?