A train passed by a man standing on the platform in 7 seconds and passed by the platform completely in 28 seconds. If the length of the platform is 330 metres, what is the length of the train?

The ratio of the radii of two wheels is 3: 4, then the ratio of their circumferences will be.

If $$ {\sqrt{3}\ CosA=SinA}$$ then what is the value of Cot A?

If $$ {sin\ θ\ cosec\  θ\over tan θ}=4 $$  then Find the value of tan θ ?

By reducing the circumference of a circle by 50 percent, by what percentage will its area decrease?

Rahul purchased 20 dozens of toys at the rate of Rs. 375 per dozen. He sold each one of them at the rate of Rs. 33. What was his percentage profit?

O is the incentre of ∆ABC and ∠A = 30° then ∠BOC is

If the difference between 2 years compound interest and simple interest at the rate of 5 percent of an amount is Rs. 25, then that amount will be?