Quantitative Aptitude - Arithmetic Ability Questions

A 150 m long train, travelling at 54 km/h, crosses a platform in 42 seconds. What is the length of the platform?

If a triangle has its orthocenter and centroid of equal length, then which of the following is TRUE about the triangle?

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is

A and B together can do a piece of work in 10 days. If A can do the work in 15 days, find in how many days that B alone can do the same work. Given below are the steps involved in solving the above problem. Arrange them in sequential order.

A) One day's work of B is 1/10 - 1/15

B) One day's work of A and B is 1/10 and One day's work of A is 1/15

C) B alone can do the work in 30 days

D) One day's work of B is 1/30

If Cot θ = 21/20, then what is the value of Cosec θ?

If x=2+3,then the value of x2-x+1x2+x+1 is

What is the reflection of the point (6, -1) in the line y = 2?

If Cot θ = 24/7, then Sin θ = ?