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?

What can go through glass without breaking it?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

Which number should replace the question mark?

What is the next number in this series?

4,12,84,3612....

Using eight eights and addition only, can you make 1000?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.