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

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

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

Why is the longest human nose just 11 inches?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

There is a place where if I stand up straight, I will still be considered sideways.

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

I look at you, you look at me I raise my right, you raise your left. What am I?