Quantitative Aptitude - Arithmetic Ability Questions

Find the average of all prime numbers between 20 and 50.

Which of the following condition is True about the similarity of triangle ABC & DEF given below?

R is 80% more efficient than S. If S alone can make a book in 90 days, then R alone can make the book in how many days?

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

In triangle ABC measure of angle B is 90 deg. If sinA = 24/25, and AB = 1.4cm, then what is the length (in cm) of side BC.

The length of one side and the diagonal of a rectangle are 8 cm and 17 cm respectively. Find its area (in cm2).

A square park having a side 22 m has two roads each 2 m wide running in the middle of it and parallel to its length and breadth. What will be the cost of gravelling the path at the rate of Rs.100/sq.m?

Find the odd pair out.