Quantitative Aptitude - Arithmetic Ability Questions

If cot 135° = x, then the value of x is

Simplify 81x2 - 49y29x + 7y

What is the value of [sin (y – z) + sin (y + z) + 2 sin y]/[sin (x – z) + sin (x + z) + 2 sin x]?

Calculate the principal if an amount of Rs. 441 is received on compound interest at the rate of 5% per annum after 2 years.

Expand : S + 23

The standard deviation of the set {10, 11, 12, 9, 8} is

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

A spherical glass vessel has a cylindrical neck 7 cm long and 4 cm in diameter. The diameter of the spherical part is 21 cm. Find the quantity of water it can hold.