Quantitative Aptitude - Arithmetic Ability Questions

If cosec 45° - sin 30° = x, then x is

$$\begin{gathered} If (x – 2)2 + (y + 3)2 + (z – 15)2 = 0, then what is the value of \\ x + y + z – 5? \end{gathered}$$

Select the odd number from the given alternatives.

Identify the odd one out from the following:

If (9 - 3x) - (17x - 10) = -1, then the value of x is

Find the volume (in cm3) of a cube of side 7.5 cm.

An inverted conical shaped vessel is filled with water to its brim. The height of the vessel is 8 cm and radius of the open end is 5 cm . When a few solid spherical metallic balls each of radius 1⁄2 cm are dropped in the vessel , 25% water is overflowed. The number of balls is:

A man engaged a servant on a condition that he would pay him Rs. 80 and a pair of jeans after service of one year. Servant served for only 9 months and receives a pair of jeans and an amount of Rs. 55. The price of the jeans is ________.