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

What can you catch but never throw?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. One time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly. Can you tell me how that was possible?”

People put me on the table and cut me but do not eat me. What am I?

How many triangles can you find in this given picture?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?