Quantitative Aptitude - Arithmetic Ability Questions

Calculate the principal if an amount of Rs. 441 is received on compound interest at the rate of 5% per annum after 2 years.

The value of sinθ+sin∅cosθ+cos∅ + cosθ-cos∅sinθ-sin∅ is

Coefficient of x in (x + 8)(6 -­ 3x) is

If Sinx = 4/5, then Sec2x - 1 = ?

A boat cover row 12 km upstream in 4 hours and can cover the same distance downstream in 3 hours. What is the speed (in km/hr) of the boat in still water?

One of four words is a class to which the other three belong. Identify the class.

Simplify 576b3x2a4z3/36a3b2z

If √x ­- √y = 1 , √x + √y = 17 then √xy = ?