Quantitative Aptitude - Arithmetic Ability Questions

If x -­ y = 7 and xy = 32, then value of (x2 + y2) is

If P/Q = R/S = T/U = 3/4 is (4P + 5R + 7T) : (3Q + 4S + 7U)?

Coefficient of x2 in (x + 9)(6 -­ 4x) is

What is the value of sin6θ + cos6θ + 3 sin2θ cos2θ –1?

A and B invest Rs. 3000 and Rs. 2400 respectively in a business. If after one year there is a loss of Rs. 720, how much loss will B bear? (Loss or Profit is in proportion to their investments)

Simple interest on a sum for six months at 5% per annum is Rs 65.5.What is the value (in Rs) of sum ?

The circumference of a circle is 88 cm, find its area?

A loan of Rs. 305 was taken at a certain rate per annum of compound interest, for 3 years. After 3 years the amount repaid was Rs. 670, calculate the rate of compound interest.