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

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

What number divided by 4 is the same as that number minus 4?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Why do Chinese men eat more rice than Japanese men do ?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

What do you call a fish without an eye?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

How many triangles are there on the puzzle below?

From a pack of 52 cards, I placed 4 cards on the table.

I will give you 4 clues about the cards:

Clue 1: Card on left cannot be greater than the card on the right.
Clue 2: Difference between the 1st card and 3rd card is 8.
Clue 3: There is no card of an ace.
Clue 4: There are no face cards (queen, king, jacks).
Clue 5: Difference between the 2nd card and 4th card is 7.

Identify four cards?