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

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

Why is the longest human nose just 11 inches?

What has to be broken before you can use it?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.