Quantitative Aptitude - Arithmetic Ability Questions

The point equidistant from the vertices of a triangle is called its

The point Q(a,b) is first reflected in y­-axis to Q1 and Q1 is reflected in x­axis to (­-5,3). The co­ordinates of point Q are

If -3/2 + (2/3)(3x + 9) = x/2, then what is the value of x?

Simplify : -21973 × -1253 ÷ 275123

If x = (√5) + 1 and y = (√5) – 1, then what is the value of (x2/y2) + (y2/x2) + 4[(x/y) + (y/x)] + 6?

If (1 - sinA)/(1 + sinA) = x, then x is

The inradius of a equilateral triangle is 10 cm. What is the circum-radius (in cm) of the same triangle?

What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(4, 0) and C(-2, 2)?