Quantitative Aptitude - Arithmetic Ability Questions

Of the 3 numbers whose average is 72, the first is 2/7 times the sum of other 2. The first number is

Select the odd letters from the given alternatives.

In the following question, select the odd word from the given alternatives.

Identify the odd one out from the following:

What is the value 32cos 39sin 51-sin239 + sin251

If cos -4π/3 = x, then the value of x is

If "basis points" are defined so that 1 percent is equal to 100 basis points, then by how many basis points is 82.5 percent greater than 62.5 percent?

The third proportional of the following numbers (x - ­y)2, (x2 - y2)2 is