An article is sold Rs.680 after two successive discounts of 20% and x% on its marked price. The marked price of the article is Rs.1000. What is the value of x?

The average monthly income of x and y is 5050. The average monthly income of y and z is 6250 and the average monthly income of x and z is 5200. The monthly income of x is?

If tanθ=1/5 then the value of Cosec²θ=?

What is the reflection of the point (-3, 1) in the line x = -2? 

If $$ secθ+tanθ=2+\sqrt{5}$$, then the value of $$ sinθ+cosθ$$ is:

The value of $$ cos {20^o} cos {40^o}cos {60^o}cos {80^o}$$ is:

A and B can do a piece of work in 40 days and 30 days respectively. They worked together for 12 days after that B was replaced by C. the work finish in next 8 days. In how many days C can alone finish the work?

The ratio of the volume of right circular cylinder and a right circular cone of the same base and height will be: