Quantitative Aptitude - Arithmetic Ability Questions

The external and the internal radii of a hollow right circular cylinder of height 15 cm are 6.75 cm and 5.25 cm respectively. If it is melted to form a solid cylinder of height half of the orignal cylinder, then the radius of the solid cylinder is

Find the sum of first 8 odd prime numbers.

Calculate the difference between the square of the largest and smallest two-digit prime numbers.

The product of two decimals is 0.768. If one of the decimal number is 1.6, find the other.

If an interior of a regular polygon is 170o, then the number of sides of the polygon is

Three sides of a triangle are 5 cm, 9 cm and x cm. The minimum integral value of x is

If 2x -­ 3 ≤ 5 + x and 5 -­ x < 1 + 5x; then x can take which of the following values?

What is the value of 643 × 121289 - 169 ?