How can a man go eight days without sleep?

I am sure no one can have two things for dinner. what are they?

In which direction should the missing arrow point?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

What is the word or phrase below?
R | E | A | D

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?