I’m tall when I’m young, and I’m short when I’m old. What am I?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

How many triangles are there on the puzzle below?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?