There was a strange boy who was born before his father. How can this be possible?

What does this Rebus Picture means ?

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?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

Replace the question mark with the number below given a simple math problem.

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Which tank will fill first?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"