Quantitative Aptitude - Arithmetic Ability Questions

If X+Y=3,XY=2, find the value of X3-Y3

3 numbers whose average is 112, the first number is 1/6th the sum of other 2. What is the first number?

The ratio of present ages of Rasika and Shami is 7:5. After 17 years the ratio of their ages will be 12:11. What is Rasika's present age?

The rate of simple interest per annum at which a sum of money double itself in 16 2/3 yrs is

What is the value of 5.6x0.36+0.42x3.20.8 x 2.1 ?

A pentagonal prism has 15 edges. How many vertices does it have?

A triangle has a perimeter of 200. If two of its sides are equal and the third side is 20 more than the equal sides, what is the length of the third side?

The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: π = 22/7)