Quantitative Aptitude - Arithmetic Ability Questions

What is the value of 643 × 121289 - 169 ?

 What is the value of (sin60° - 2/√3) ?

Solve the following 7 x {4 + (-2) x (-3)} = ?

The two equal sides of an isosceles triangle is 20 cm each and the third side is 30 cm. What is the area (in sq.cm) of the triangle?

Amit is five years older than Vaibhav at present. After four years the ratio of their age will be 5:4. What is Amit age at present (in years)?

What is the area (in sq cm) of a regular hexagon of side 14 cm?

The surface area (in sq.cm.) of a sphere with radius 1 cm is :(pi = 22/7)

When a number is divided by 56, the remainder will be 29. If the same number is divided by 8, then the remainder will be