What does this below rebus puzzle mean?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

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

Can you write down eight eights so that they add up to one thousand?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT