Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 5 and a2 + b2 = 97, ab = ?

The pair of linear equations 3x + y = 1 and px + 2y = 5 has no finite solution if

What is the value of 643 × 121289 - 169 ?

What is the slope of the line perpendicular to the line passing through the points (­-4,5) and (3,­-2)?

If the curved surface area of a right circular cone is 10010 sq cm and its slant height is 91 cm, find its total surface area.

What is the slope of the line parallel to the line passing through the points (5, -1) and (4, -4)?

The total surface area of a cube is 73.5 sq.cm. Find its side (in cm).

Solve : (x + 2y) (2x - y)