You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

You can see three almost identical images below. Can you spot the odd one out from them?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What 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?

What Deficiency does the below rebus represent?

VIT_MIN

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

There is something which you can be arrested for attempting but not for successfully completing.

How can one talk without saying a single word?