Quantitative Aptitude - Arithmetic Ability Questions

If a(x + y) = b(x - y) = 2ab, then the value of 2(x2 + y2)

What number should be added to each of the numbers 55, 100, 65 and 116, so that the resulting numbers are in continued proportion?

Two pipes of length 1.5 m and 1.2 m are to be cut into equal pieces without leaving any extra length of pipes. The greatest length of the pipe pieces of same size which can be cut from these two lengths will be

If secA -­ tanA = x, then the value of x is

If 4x + 1x = 5, (x≠0), then the value of 5x4x2+10x+1 is

How long does a train, 75 m long, moving at 60 km/hr take to pass a certain telegraph post?

The largest 5 digit number exactly divisible by 84 is:

In a container, two types of liquids P and Q are in the ratio of 3 : 7. If 10 litres mixture is drawn off from the container and filled with 6 litres of liquid Q,then the ratio of P and Q becomes 1 : 3. What was the original quantity (in litres) of mixture?