Quantitative Aptitude - Arithmetic Ability Questions

Find out the odd word/letters/number/number pair from the given alternatives.

What is the value of sinAtanA/(1 - cosA)?

If the value of √30  is approximately 5.477, then what is the approximate value of 56 ?

2cos[(C+D)/2]sin[(C-D)/2] is equal to

Simplify : 132 - 142 + 172 - 250 = ?

The value of ds+t÷ds÷dt

If compound interest received on a certain amount in the 3rd year is Rs. 12,100, what will be the compound interest (in Rs) for the 4th year on the same amount if rate of interest is 9%?

If cosαcosβ=m and cosαsinβ=n,then the value of m2+n2 cos2β is