Why is Saturday stronger than Monday?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

How many triangles do you see in the picture puzzle below?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

How is the moon similar to a dollar?

You need to move three matchsticks to form three squares. Can you do it?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

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