Quantitative Aptitude - Arithmetic Ability Questions

Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs 1200 for 2 years at 10% per annum. The sum placed on simple interest is

A and B can do a piece of work in 18 days, B and C in 24 days, A and C in 36 days. Working together they can do the work in

Select the odd word/letters/number/number pair from the given alternatives.

If x - y = -8 and xy = 45, then (x2 + y2) is

What is the value of (1/2) Sec 30° + √2 Tan 60°?

If ( x - 5)2 + (y - 2)2 + (z - 9)2 = 0, then value of (x + y - z) is

Coefficient of x2 in 4x3 - 2x2 + 2x -­ 3 are

Which of the following numbers is completely divisible by 99?