what does the below rebus means?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

I am written with two letters.
I said with the one.
I usually am seen with the two.

Who am I?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

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

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag