What occurs twice in a week, once in a year but never in a day?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

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

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?