A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

Name a key which is hardest to turn.

You need to arrange three 7 and mathematical symbols to form number 1?

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

Can you name some countries which do not have the alphabet 'A' in them?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

You see me once in June, twice in November, and not at all in May. What am I?

Can you find a five letter word that is left with only two letters if one is removed?

Imagine you are in a room with no windows or doors. How will you get out?

I can be cracked, made, told, and played. What am I?