Premise: A young boy in a t-shirt , sweats and a red hat , skateboarding in a skateboard arena , with an audience on the side and blue skies above .
Correct statement: It is impossible that some of the audience do not watch the skateboarder .
Incorrect statement: It is certain that some of the audience do not watch the skateboarder .
Correct statement: There is a very good chance that a boy is performing for people outside
Incorrect statement: It is unlikely that a boy is performing for people outside
Correct statement: There is a very good chance that a young boy is in a skateboard competition .
Incorrect statement: It is impossible that a young boy is in a skateboard competition .
Correct statement: It is highly likely that a boy skates at a skateboarding competition
Incorrect statement: Chances are slight that a boy skates at a skateboarding competition
Correct statement: It is impossible that a boy is about to do a 720
Incorrect statement: It is certain that a boy is about to do a 720