What is the probability a multiple of a certain number is selected from a certain list?[br][br]We need to count how many terms are in the list (see [url]http://www.geogebratube.org/student/b138355#material/142299[/url] to practice that).[br]We need to count how many multiples of the number are in the list (which is much harder than it may seem).[br]Then we need to compute the probability, which in general is the number of successes divided by the total number of outcomes.