Quantitative Aptitude - Arithmetic Ability Questions

If A and B are the roots of the equation Ax2 – A2x + AB = 0, then what is the value of A and B respectively?

What is the difference (in Rs) between compound interest (compounded annually) and simple interest for 3 years on a principal of Rs 3000 at the annual rate of 20%?

What is the value of (cos45° + 1/3) ?

What is the value of √[(1 - sinA)/(1 + sinA)]?

PQ and RS are common tangents to two circles intersecting at A and B. AB, when produced both sides, meet the tangents PQ and RS at X and Y, respectively. If AB = 3 cm, XY = 5 cm, then PQ (in cm) will be

How much does one need to add to 2/3 to obtain 3/2?

A train travelling at 76 kmph crosses a 450 m long platform in 27 seconds. What is the length of the train?

If p = 99, then the value of p(p2+3p+3) will be