Premise: Four boys play on a merry-go-round at a park .
Correct statement: It is impossible that four boys are playing on a merry-go-round in Central Park .
Incorrect statement: It is certain that four boys are playing on a merry-go-round in Central Park .
Correct statement: Chances are about even that children are spinning fast
Incorrect statement: It is certain that children are spinning fast
Correct statement: There is a better than even chance that the boys are all under 11 years old .
Incorrect statement: Chances are slight that the boys are all under 11 years old .
Correct statement: It is impossible that brothers and sisters playing on a merry-go-round .
Incorrect statement: It is highly likely that brothers and sisters playing on a merry-go-round .
Correct statement: There is almost no chance that some boys are playing dangerously on a merry-go-round .
Incorrect statement: There is a very good chance that some boys are playing dangerously on a merry-go-round .