Quantitative Aptitude - Arithmetic Ability Questions

A piece of work can be done by 16 men in 8 days working 12 hours a day. How many men are needed to complete another work, which is three times the first one, in 24 days working 8 hours a day?

10 people could complete a task in 8 days. After 4 days, 2 of the workers left. How many days from then did it take to complete the task?

What is the measure of an interior angle of a regular dodecagon?

If the sum of the measures of all the interior angles of polygon is 1800°, find the number of sides of the polygon?

The surface area (in sq.cm.) of a sphere with radius 1 cm is :(pi = 22/7)

n an alloy, lead and tin are in the ratio of 2 : 3. In the second alloy, the ratio of same elements is 3 : 4. If equal quantities of these two alloy are mixed to forma new alloy, then what will be the ratio of these two elements in the new alloy? 

Select the odd word/letters/number/number pair from the given alternatives.

Select the odd word/letters/number/number pair from the given alternatives.