What do you answer even though it never asks you questions?

What does below Rebus mean ?

esgg sgeg gegs gsge

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

How far can you walk into the woods?

Replace the question mark with the number below given a simple math problem.

Can you find the thief by just looking at the picture below?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.