Quantitative Aptitude - Arithmetic Ability Questions

What is the value of [(sin 59° cos 31° + cos 59° sin 31° )÷(cos 20° cos 25° – sin 20° sin 25° )]?

The value of (1 - √2) + (√2 - √3) + (√3 - √4) + ..... + (√15 - √16) is

The value of -261+(-380)-(-521)+821-(-121)

A certain amount of money is divided between A and B in the ratio of 5:6. If B gets Rs. 360, the amount is

Find two numbers such that their mean proportion is 16 and third proportion is 1024.

Find the marked price if the selling price is Rs. 9250 and discount is 7.5%.

The price of an article is cut by 9%, to restore to its original value, the new price must be increased by

What approximate value should come in place of the question mark (?) in the following equation (Note: You are not expected to calculate the exact value)?(55.01+16.0003)×22.01÷10.998 =?