Quantitative Aptitude - Arithmetic Ability Questions

If x = 313- 3-13, then 3x2 + 9xis equal to

What is the value of cot 11π/6?

The total surface area of a hemisphere is 166.32 sq cm, find its radius?

Two circles are having radii 9 cm and 12 cm. The distance between their centres is 15 cm. What is the length (in cm) of their common chord?

Breadth of a rectangle is equal to the diagonal of the square whose side is 2.5√2 cm. Ratio between length and breadth of rectangle is 3 : 1. Find the area of the rectangle (in cm2).

What is the value of Sin 30° - Cosec 45°?

There is 40% increase in an amount in 5 years at simple interest. What will be the compound interest of Rs. 25000 after 3 years at the same rate?

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 12% per annum is Rs 900. What is the value of given sum (in Rs)?