How is a fly different from a mosquito?

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

What does below Rebus say?

XLR8

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?