Complex sentence: Originally, the contestant was either presented with four digits in the price of the car, out of order, which they had to place with the correct prizes; or they had to guess the digits outright with no assistance.
Split into simpler sentences: Originally, the contestant was either presented with four digits in the price of the car, out of order, which they had to place with the correct prizes. In another version the contestant had to guess the digits outright with no assistance.