Quantitative Aptitude - Arithmetic Ability Questions

In a mixture 25 liters, the ratio of milk and water is 4:1. How many liters of milk must be added to make the ratio 16:1?

Sin6A + Cos6A - 1 is equal to

If a rod of length 208 45 is cut into equal pieces of length 23 15 then the total number of rods obtained is

Find the odd one out.

Pick the odd one out from the following

What is the value of (cos30° + 1/2) ?

Find the approximate simple interest on Rs. 2000 from March 9, 2010 to May 21, 2010 at 8.25% per annum.

O is the center of the circle and two tangents are drawn from a point P to this circle at points A and B. If ∠AOP = 50°, then what is the value (in degrees) of ∠APB?