Quantitative Aptitude - Arithmetic Ability Questions

If (x – 2)2 + (y + 3)2 + (z – 15)2 = 0, then what is the value of x + y + z – 5?

What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(-4, 0) and C(3, -4)?

Which one of the following is true for 0°<θ<90°

If a+1b=1 and b+1c=1 , then the value of c+1a is

The distance between the points (7,7) and (k,-5) is 13. Find k?

What will be the equation of the perpendicular bisector of segment joining the points (5,­3) and (0,2)?

The two sides holding the right-angle in a right-angled triangle are 3 cm and 4 cm long. The area of its circumcircle will be in sq.cm:

Find the circumference (in cm) of a circle of radius 17.5 cm.