If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

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

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

I travel all around the world but always stay in the corner. What am I?

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

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What do you think with the below Picture ?

Find the 8 in the below-given Image.

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.