Quantitative Aptitude - Arithmetic Ability Questions

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

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?

ABCDEF is a regular hexagon of side 12 cm. What is the area (in cm2) of the triangle ECD?

The ratio of number of boys to the number of girls in a school of 432 pupils is 5 : 4. When some new boys and girls are admitted, the number of boys increase by 12 and the ratio of the boys to girls changes to 7 : 6. The number of new girls admitted is

If the radius of a circle is increased by 21%, then its area will increase by what percent?

The marked price of a ceiling fan is Rs. 1200 and the shopkeeper allows a discount of 5 % on it. Then selling price of the fan is

If in 3 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs. 25,000 in 3 years at the same rate?

24 men can repair a road in 50 days. If they are joined by 16 more men, then in how much time (in days) the road can be repaired?