Quantitative Aptitude - Arithmetic Ability Questions

If x = 2 +√3, y = 2 – √3 and z = 1, then what is the value of (x/yz) + (y/xz) + (z/xy) + 2 [(1/x) + (1/y) + (1/z)]?

The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 5% per annum is Rs 45. The sum is

If 3x - 8(2 - x) = -19, then the value of x is

The price of an article is discounted by 25%, to restore to its original value, the new price must be increased by

A kite is flying in the sky. The length of string between a point on the ground and kite is 420 m. The angle of elevation of string with the ground is 30 deg. Assuming that there is no slack in the string, then what is the height (in metres) of the kite?

The compound interest earned in two years at 12% per annum is Rs 10176. What is the sum (in Rs) invested?

Given a -­ b = 2, a3 - b3=26 then (a + b)2 is

A 8 cm long perpendicular is drawn from the centre of a circle to a 12 cm long chord. The diameter of the circle is