Quantitative Aptitude - Arithmetic Ability Questions

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

If aq-r+br-p-cp-q, then find the value of (pa + qp + rc) is

What will be the roots of the quadratic equation x2 - 25x + 156 = 0?

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

What is the value of sin 5π/3?

If a(x + y) = b(x - y) = 2ab, then the value of 2(x2 + y2)

If x – y – √18 = –1 and x + y – 3√2 = 1, then what is the value of 12xy(x2 – y2)?

On a certain principal if the simple interest for two years is Rs 2800 and compound interest for the two years is Rs 2996, what is the rate of Interest?