How many elements are in the union of four sets if the sets have 50, 60, 70, and 80 elements, respectively, each pair of the sets has 5 elements in common, each triple of the sets has 1 common element, and no element is in all four sets

There are 227 elements in the union of the sets A, B, C, D.

Step-by-step explanation:

Let n(A) the number of elements of A. Then, remember that the number of elements of four set A, B, C, D is

Then,

days of the week

step-by-step explanation:

javier earned more money then kyle, so that won't always be a constant term, but the days of the week do not change so that term is always constant.

edit: i meant

the answer is su.k.my? ? co.kc