Quantitative Aptitude - Arithmetic Ability Questions

Expand and simplify (x + 4)2 + (x -­ 2)2

A, B and C can do a job working alone in 12, 16 and 24 days respectively. In how many days they can do the job if they worked together?

A and B together can do a piece of work in 10 days. If A can do the work in 15 days, find in how many days that B alone can do the same work. Given below are the steps involved in solving the above problem. Arrange them in sequential order.

A) One day's work of B is 1/10 - 1/15

B) One day's work of A and B is 1/10 and One day's work of A is 1/15

C) B alone can do the work in 30 days

D) One day's work of B is 1/30

What is the least number that should be added to the product 11 x 12 x 13 x 14 to make it a perfect square?

The fraction from the ones listed below that will NOT lead to a recurring decimal is

If 20 men working 8 hours per day can complete a piece of work in 21 days. How many hours per day must 48 men work to complete the same job in 7 days?

A shopkeeper sells wheat at a profit of 20% and for weighing uses a weight which is 10% less than the actual weight. What is his total profit percentage?

Find the total surface area (in cm2 ) of a hemisphere of diameter 42 cm.