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's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

A bomb exploded in a room full of married couples and no one died. How?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

Spot 5 differences in two Christmas tree below:

Which letter of the alphabet has the most water?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

What country can make you shiver?