Quantitative Aptitude - Arithmetic Ability Questions

If x = 1.1, then what is the value of 4x2 -4x + 1 ?

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

The value of ds+t÷ds÷dt

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

If sinθ+cosθsinθ-cosθ=3,then the value of sin4θ-cos4θ 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?

What is the average of all natural numbers from 21 to 39?

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