Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Can you decipher the following common phrase?

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

Complete the table series riddle by finding the number that can replace "??".

I add 5 to 9 and get 2. The answer is correct, so what am I?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

What came first, the chicken or the egg?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?