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

There is an ancient kingdom where every married woman keeps information regarding the fidelity of other men. However, what they don't know is the fidelity of their own husbands. Also, there is an ancient belief that they don't tell each other about the fidelity of their husbands.

On a certain day, the queen of the kingdom declares that she has identified at least one unfaithful man in the kingdom. She allows the wives to identify and gives them authority to kill their husbands if they are unfaithful at midnight.

How will the wives manage it?

Can you count the number of triangles in the given figure?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

What do you call a fish without an eye?

I have an eye but still cannot see.

Who am I?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

You need to move three matchsticks to form three squares. Can you do it?

What is the largest number you can write with just 3 digits?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..