Quantitative Aptitude - Arithmetic Ability Questions

Determine the value of z in the equation: z = 20+20+20+20+...∞

Calculate the value of 55-5, if the value of √5 = 2.236.

If x2 + y2 + 6x + 5 = 4(x - y) then x - y is

The co-ordinates of the centroid of a triangle ABC are (3,-2). What are the co-ordinates of vertex C if co-ordinates of A and B are (-2,5) and (6,-2) respectively?

If 2x+4-2x+2=3, then the value of x?

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

The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: π = 22/7)

The area of a circle is 346.5 cm². Find its radius (in cm).