Questions

If the sum of three consecutive numbers is 15, what is the square of the middle number ?

The angle of elevation of the top of a pillar from the foot and the top of a building 20 m high, are 60° and 30° respectively. The height of the pillar is

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No error'.
She ascended (1)/ to the throne (2)/ at the early age of seven. (3)/ No Error (4)

In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".

Someone must (being) killed.

What is the Greenhouse Effect?

How many atoms will one mole of Carbon (C-12) contain?

A price floor is _____.

Which was the capital of the first Sri Lankan kingdom?