Which of the below owl is odd one out?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Move four matchsticks to the below square to form three squares?

How can a man go eight days without sleep?

What always comes into a house through the keyhole?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Rebus Puzzle Definition: A rebus is an illusion device that uses pictures to represent words or parts of words.
What does This Rebus Puzzle Identify?

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

Can it be possible to build a house that has all its four walls facing towards the South?