Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

How many times can you subtract the number 5 from 25?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

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

How Come ??

You can see it everyday, But cannot touch it at will. What is it?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99