Quantitative Aptitude - Arithmetic Ability Questions

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

What should be added to 3(x­ - 2y) to obtain 2(3x + y) -­ 5(2x + 3)?

The third proportional of two numbers 24 and 36 is

In the last financial year, a car company sold 41,800 cars . In this year, the target is to sell 51,300 cars . By what percent must the sale be increased ?

If x2 – 12x + 33 = 0, then what is the value of (x – 4)2 + [1/(x – 4)2]?

If a4 + 1 = [a2 /b2 ] (4b2 – b4 – 1), then what is the value of a4 + b4?

Select the odd word from the given alternatives.

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