Quantitative Aptitude - Arithmetic Ability Questions

What is the slope of the line perpendicular to the line passing through the points (8,­2) and (3,­1)?

If a+1a2 = 3, then the value of a18+ a12+a6 + 1 is

Length of the sides of a triangle are a, b, c respectively. If a2 + b2 + c2 = ab +bc + ca then the triangle is

What is the average of first 19 odd numbers?

Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?

PT is a tangent to a circle with centre O and radius 6 cm . If PT is 8 cm then length of OP is

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by

The simplified value of 3-212-18 - 13 × 27 - 12 x 273 is closest to