=+. Let 2 be the unit square [(x, y): 0 < x, y ≤ 1], let 9 be the class of sets of the form [(x, y): x €A, 0 < y ≤ 1], where A € 8, and let P have value A(A) at this set. Show that (2, 9, P) is a probability measure space. Show for A = [(x, y):

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