What's the only room from which no one can enter or leave

Can you divide the below-given shape into four equal and identical pieces?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

They are three errirs in this question. Can you find them?

How many letters are in the alphabet?

What is so fragile that saying its name breaks it?

James ordered a fishing rod, priced at $3.56. Unfortunately, James is an Eskimo who lives in a very remote part of Greenland and the import rules forbid any package longer than 4 feet to be imported. The fishing rod was 4 feet and 1 inch, just a little too long, so how can the fishing rod be mailed to James without breaking the rules? Ideally James would like the fishing rod to arrive in one piece!

What question can you never answer yes to?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *