I have branches, but no fruit, trunk or leaves. What am I?

Find the missing number in the image below.

When can we add 2 to 11 and get 1 as the correct answer?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

You are a thief and you are being punished for your crime. People have tied your head down on a tree with a rope that has been anchored in the ground. A candle is burning below the rope which is slowly burning it away. Just below your head, a Lion has been left loose and is waiting for you to drop down on the ground so he can have you as his lunch.

You have to survive the scenario. How will you do it?

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

Find the next number in the series below

21 32 54 87 131 ?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

Move three sticks of the spiral below to form a square.