so what i'm noit grasping is why we neglect the fact that N=5 when solving. I mean it makes sense but not really. I read it as for a family size of m the amount that rides a roller coaster is so and so... .so for a family 6, the amount that ride a rollercoaster is 1/6... Iike i'm interpreting N=m|M=m
Looking at N=m|M=m (m members that ride coaster, given that there are m family members ) is only one possibility but logically speaking we can certainly have N
