Bheja fry question

 Recently I came across this question on web radio.

Question is very simple. 

If we cut a rope once, we get 2 pieces. Then how many pieces will we get if we cut the rope  thrice  ?

I will explain what I first did.

I did the cross multiplication.

That means once we cut, we get 2 pieces.

So                  thrice we cut. We get 3 *2 = 6 pieces.

But above method is wrong.

Don't make the mistake as I did.

Correct method

When we cut a rope once, we get 2 pieces. 

Now out of them, take one piece.

Cut that. We get 2 pieces. This is the second cut. 

Now we have 3 pieces of rope with us. 

As the third cut, take one of the pieces. Cut it to get 2 pieces. 

Finally we have 2 pieces which were there already and now new 2 pieces we have got by cutting the rope just now .

Finally, after 3 cuts we have 4 pieces of rope not 6 !!!