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

Prove that the below maths equation is true.

8 + 8 = 91

How can a man go eight days without sleep?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

Find the 8 in the below-given Image.

An apple seller is hosting a competition. He offers 1000 apples and 10 boxes to the people who pass by. The challenge is to put those 1000 apples in the 10 boxes in such a manner that if he asks for any amount of apples, the person can directly give him the boxes or a combination of boxes. If the person can do it, he promises to give a thousand apples for free.

If you happen to pass by the apple seller, will you be able to win a thousand apples?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Find the value of "?" in the ball picture Riddle below:

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

Which Travels Faster? Solve below famous picture riddle: