A young man is doing a skateboarding trick while two guys take pictures and another is riding a scooter .
Chances are about even that a young man does a trick on a red skateboard in front of two guys photographing him and another guy does a trick on his green scooter .
There is almost no chance that a young man does a trick on a red skateboard in front of two guys photographing him and another guy does a trick on his green scooter .
Chances are about even that a young man does a trick on a red skateboard in front of two guys photographing him and another guy does a trick on his green scooter .
A young man does a trick on a red skateboard in front of two guys photographing him and another guy does a trick on his green scooter .