Quantitative Aptitude - Arithmetic Ability Questions

Which of the following numbers is not composite?

The interest on Rs. 1250 for 6 years at the rate of 4% simple interest per annum will be

M borrowed some money for 1 year at certain simple interest. But the interest rate was increased to 2% which amounted to Rs.120. Find the principal amount.

The median of the data -3, 4, 0, 4, -2, -5, 1, 7, 10, 5 is

If 5x - (1/2)(2x -7) = 5.5, then what is the value of x?

If cosec 45° - sin 30° = x, then x is

There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 36000 after 2 years at the same rate?

The number of sides of a regular polygon whose exterior angles are each 40 deg is