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?

If you say my name, I will no longer exist. What am I?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

During which month do people sleep the least?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

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?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?