Quantitative Aptitude - Arithmetic Ability Questions

If A : B = 3 : 4 and B : C = 6 : 5 then A : (A + C) is

If √x ­- √y = 1 , √x + √y = 17 then √xy = ?

If (8 - 10x) - (13x - 2) = -9, then the value of x is

If 2x- ­2(x ­- 2) < 5 ­- x > ­-2x + 2; then the value of x is

A = (x8 – 1)/(x4 + 1) and B = (y4 – 1)/(y2 + 1). If x = 2 and y = 9, then what is the value ofA2 + 2AB + AB2?

∆XYZ is right angled at Y. If tanX = 15/8, then what is the value of sinZ ?

The average of 8 consecutive integers is 23/2. What is the average of first three integers?

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