Quantitative Aptitude - Arithmetic Ability Questions

The angles of elevation of the top of a temple, from the foot and the top of a building 30 m high, are 60° and 30° respectively. Then height of the temple is

Two circles of same radius intersect each other at P and Q. If the length of the common chord is 30 cm and distance between the centres of the two circlesis 40 cm, then what is the radius (in cm) of the circles?

The point equidistant from the sides of a triangle is called

How many prime numbers are there between the positive integers 60 and 100?

A right-angled triangle ABC is right-angled at B, and tan A = 4/3. If AC = 25 cm, the length of BC is

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

Which of the following numbers is composite?

One pipe can fill an empty cistern in 4 hours while another can drain the cistern when full in 10 hours. Both the pipes were turned on when the cistern was half-empty. How long will it take for the cistern to be full?