Quantitative Aptitude - Arithmetic Ability Questions

If a -­ b = 6 and ab =16, then a3 -­ b3 is

Find the value of  x3 - y3, if x - y = 4 and xy = 12.

What is the value of ( 1/2 - cot45) ?

If the Arithmetic mean of 7, 5, 13, x and 9 is 10, then the value of x is

What is the slope of the line parallel to the line passing through the points (-2, -1) and (4, -3)?

There are 1400 students in a school, 25% of those wear spectacles and 2/7 of those wearing spectacles are boys. How many girls in the school wear spectacles?

If x/2 - [4(15/2 - x/3)]/3 = -x/18, then what is the value of x?

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b