Dans un College de 250 élèves, 72 pratiquent le football, 50 au basket-ball et 65 qu Volley- ball. on a noté que 24 Footballeurs jouent aussi au basketball et 14 au volley-ball; de plus 13 Volleyeurs pratiquent le basket et 4 font les trois sports. Combien d'éléves ne pratiquent aucun sport?

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Wrote and expression for the difference of p and 4

Out of $20$ creepy-crawly creatures in a room, $80\%$ are flies and $20\%$ are spiders. if $s\%$ of the total legs belong to spiders, what is $s$?