Quantitative Aptitude - Arithmetic Ability Questions

Find the square root of 15625.

If 4x = √5+ 2, then the value of x - 1/16x is

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

To travel 708 km, an Express train takes 6 hours more than Rajdhani train. If however, the speed of the Express train is doubled, it takes 3 hours less than Rajdhani train. What is the speed of Rajdhani train?

A dishonest shopkeeper uses a weight of 850 gm instead of 1 kg and sells rice on its cost price. What will be his profit percentage on selling 5 kg rice?

After deducting 12% from a certain sum and then deducting 25% from the remainder, 2508 is left, then what is the initial sum?

If the measure of the interior angle of a regular polygon is 1800, then how many sides does it have?

80 litre mixture of milk and water contains 10% milk. How much milk (in litres) must be added to make water percentage in the mixture as 80%?