Quantitative Aptitude - Arithmetic Ability Questions

There is a three digit number. The digit at the tenth place is 3. If the place of all the digits are replaced with each other symmetrically about the tens position,then the new number obtained is 396 more than the original three digit number. The sum of the digits at unit & hundredth place is 14. Find out the original number?

If x = 222, y = 223, z = 225 then the value ofx3 + y3 + z3 - 3xyz is

For x > 0, what is the minimum value of  x + x+22x?

The population of a town is 350000. It increases annually at the rate of 20%. What will be the population after 2 years?

Ehsaan is twice as good a worker as Kamal and together they finish a piece of work in 29 days. In how many days will Kamal, working alone, finish the work?

What smallest number should be added to 2401 so that the sum is completely divisible by 14 ?

In a class of 60 students there are 33 girls. The average weight of these girls is 62 Kg and average weight of the full class is 66.5 kg. What is the average weight of the boys of the class?

A loan of Rs. 305 was taken at a certain rate per annum of compound interest, for 3 years. After 3 years the amount repaid was Rs. 670, calculate the rate of compound interest.