Name a key which is hardest to turn.

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

What is the coolest letter in the alphabet?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Can you write down eight eights so that they add up to one thousand?

Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.

How do you survive?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

With the help clues provided in the image, can you find the 5 digit key?

What do you call a fish without an eye?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?