Quantitative Aptitude - Arithmetic Ability Questions

If a2+1=a, then the value of a3 is

Two fractions are such that their product is ­9/10 and sum is ­13/40. What are the two fractions.

Find the average of all prime numbers from 1 to 50.

What is the value of ( 1/3 - cosec30°) ?

Find the value of  y(y4 - y2 - y) when y = 5.

What is the equation of the line if its slope is 1/4 and y-­intercept is ­-3?

The co-ordinates of the centroid of a triangle ABC are (2 , 2). What are the co-ordinates of vertex C if co-ordinates of A and B are (7 , -1) and (1 , 2) respectively?

The circumference of a circle is equal to the perimeter of an equilateral Δ. If the radius of the circle is 14 cm what is the length of the side of the equilateral Δ?