there is a group of 10 people ordering pizza, each person gets 4 slices, there are 6 slices in each pizza, how much pizza should they order

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?