Out of four images which one is the odd one out?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

Replace the question mark with the number below given a simple math problem.

Which is faster, Heat or Cold ? Explain.

A man dies of old age on his 25 birthday. How is this possible?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What is the end of everything?

It is always ahead of me yet I can never see it. What is it?