Quantitative Aptitude - Arithmetic Ability Questions

What is the area (in sq cm) of a regular hexagon of side 6 cm?

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

If (6x ­- 1) -­ (8x -­ 5) = 7, then the value of x is _______ .

In the following question, select the odd letters from the given alternatives.

If a - b = 1 and ab = 6, then what is the value of a3- b3?

The inradius of a equilateral triangle is 10 cm. What is the circum-radius (in cm) of the same triangle?

Product of digits of a 2-digit number is 15. If we add 18 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

The average height of 30 boys out of a class of 50 is 160 cm. If the average height of the remaining boys is 165 cm, the average height of the whole class (in cm) is: