It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

How many times in a given day, minutes and hour clock comes in a straight line ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

The centre of the third figure is empty. What digit should fit inside?

You need to arrange three 7 and mathematical symbols to form number 1?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

What can you see in the middle of March and April that you can never see in any other month?