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?

A man dies of old age on his 25 birthday. How is this possible?

If a wheel has 54 spokes, how many spaces are there between the spokes?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

Can you decipher the two rows to find the hidden word?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?