How can a man go eight days without sleep?

I shave every day, but my beard stays the same. What am I?

What two things can you never eat for breakfast?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Can you find a number that lies one third of the distance between 1/3 and 2/3?

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

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?