Spot 5 differences in two Christmas tree below:

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

How can you leave a room with two legs and return with six legs?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

How can you take 2 from 5 and leave 4?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

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

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?