A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Imagine you are in a room with no windows or doors. How will you get out?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

What is black when you buy it, red when you use it, and gray when you throw it away?

How can a man go eight days without sleep?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den