Quantitative Aptitude - Arithmetic Ability Questions

The slope of the line passing through the points (7,-2) and (x,1) is -3/10. Find x.

If cos -4π/3 = x, then the value of x is

If x = 5 + 15 - 1 & y = 5 - 15 + 1, then find the value of x2 - y2.

In ΔDEF measure of angle E is 90 deg. If cotD = 8/15, and DE = 16cm, then what is the length (in cm) of side EF?

If a+1a=1,then the value of a2-a+1a2+a+1 is a≠0

Rahul can complete a work in 18 days and Sonu can complete the same work in 15 days. If both together work for 5 days, then what part of total work is left?

Fraction that lies between 2/5 and 4/9 is

G is the centroid of the equilateral triangle ABC, if AB = 9cm then AG is equal to