Quantitative Aptitude - Arithmetic Ability Questions

For what value of k, the expression x6– 18x3 + k will be a perfect square?

What is the least number of complete years in which a sum of money put out at 40% annual compound interest will be more than trebled?

Ram is 20 years younger than Shyam. 5 years ago, the ratio of their age was 3:5. The sum of their present age is

In triangle XYZ, G is the centroid. If XY = 11 cm, YZ = 14 cm and XZ = 7 cm, then what is the value (in cm) of GM ?

M is the largest 4 digit number, which when divided by 4, 5, 6 and 7 leaves remainder as 2, 3, 4, and 5 respectively. What will be the remainder when M is divided by 9?

If a + b = ­ 8 and a2 + b2 = 34, then value of ab is

A dishonest milkman buys milk at Rs 24 per litre and adds 1/3 of water to it and sells the mixture at Rs 32 per litre. What is his gain?

The marked price of a pencil is 35% more than its cost price. What maximum discount percentage can be offered by the shopkeeper to sell his pencil at no profit or no loss?