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

What has a bottom at the top?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

How many triangles can you count in the figure given?

If 21x = 79x, what is the value of x?

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 ?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

You can hear me, but you can't touch or see me.

What am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?