It is a mathmatical thing. If you notice many of the symbols are repeated several times, to ensure, they give you the one you see.
lol, kind of like a trick with the cards, if you take your four aces, kings , queens and jacks, and thell a cute story like ...
Once there were four houses (aces) that were big and beutiful, so one day the kings of the world decided they should each buy one (stack the four kings on top of the four aces in seperate piles.The kings needed to find a queen to live happily ever after so they each found themselves a beautifull bride (stack the queens, one on top of each pile) The queen decided that the house was in need of repair, so they all found a handy man (stack the jacks, one to each pile)After the repairs were done, the queens decided they didnt want jack to leave and found excuses for him to stay which in the end turned into an affair. As we all know affairs are nothing but triuble, and eventully the kings found out. A large battle was waged and they all came together one last time in the proceedings of divorce. now stack each pile as the stand now, one top of the next till they are all in one single pile. Have a person cut this deck two times. Then say after the divorce everyone went there seprerate ways. now lay down the top four cards in seperate piles next to each other and the follow that order till all the cards are gone, you should have four seperate stacks, Aces, kings, queens, and jacks. no matter how you cut them as long as they stay in this order from above, they will always end in seperate places..