Questions

The profit (in Rs.) after selling an article for Rs.524 is the same as the loss (in Rs.) after selling it for Rs.452. The cost price of the article is:

ΔXYZ is right angled at Y. If cosX = 3/5, then what is the value of cosecZ ?

A boat is sailing towards a lighthouse of height 20√3 m at a certain speed. The angle of elevation of the top of the lighthouse changes from 30° to 60° in 10 seconds. What is the time taken (in seconds) by the boat to reach the lighthouse from its initial position?

Rashtrapati Bhavan was built in _________.

Many freshwater animals cannot live for long in sea water and vice versa because of the _______ problems, they would face.

Who invented first working laser?

Bacteria was discovered by

Who Invented Electric Stove?