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

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

Which is the rope you never skip with?

These types of puzzles are known as charades. What you have to do is find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be office.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Whats the next number in the below number sequence pattern.

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

What can you see in the middle of March and April that you can never see in any other month?