Quantitative Aptitude - Arithmetic Ability Questions

If x + (1/x) = 2, then what is the value of x21 + (1/x1331)?

A box weighs 8.5 kg when full of sand and weighs 5.5 kg when it is half filled with sand . Weight of the empty box is

What is the third proportional to 9 and 45?

If the product of two numbers is 4941 and their LCM is 81, then their HCF is :

The LCM of two numbers is 66. The numbers are in the ratio 2:3. The sum of the numbers is

Simple interest on a sum for 12 months at the rate of 25% per annum is Rs 935.What is the value (in Rs) of sum?

The maximum value of 5+20x-4x2, when X is real number

What is the Number of candidates who had applied if the ratio of selected to unselected was 14 : 25. If 35 less had applied and 10 less selected, the ratio of selected to unselected would have been 3 : 5?