Quantitative Aptitude - Arithmetic Ability Questions

If √(1 - cos2A) = x, then the value of x is

Select the odd word/letters/number/number pair from the given alternatives.

If a + b = 8 and ab = 15, then what is the value of a3 + b3?

If tan(A/2) = x, then the value of x is

A cone is hollowed out of a solid wooden cube of side 7 cm. The diameter and height of the cone is same as the side of the cube. What is the volume of the remaining cube?

If a merchant offers a discount of 25% on the list price, then he makes a loss of 5%. What % profit or % loss will he make if he sells at a discount of 10% of the list price?

A bus travels 720 km in 20 hours. Calculate its average speed in meters/second.

In 2 years at simple interest the principal increases by 8%. What will be the compound interest earned (in Rs) on Rs 10 lakhs in 2 years at the same rate?