Can you decipher the following common phrase?

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

What does this rebus mean?

O
N
C
E
TIME

I look at you, you look at me, I raise my right, you raise your left. What am I?

In a Society, there are over 100 flats.

Flat 1 is named the first flat.
Flat 2 is named the second flat.
Flat 3 is named the third flat. And So On.....

A visitor decides to walk through all the flats, and he finds all the flats except flat 62.
Anmol later founds that the locals of the town have given it another name.

What is the name of the Flat?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

There was a kingdom in which the king had no heir to take over his thrown. Even the queen was dead and he himself was on the verge of dying. He thought about it and then summoned all of the teenagers. He gave one seed each to all of them and asked them to grow the plant. He announced that the one with the most beautiful plant will become the king/queen of the empire after the death of the king.

After a month, all of them were called. The king looked at all of the plants but announced the girl with an empty pot as the queen of the empire. Why?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?