Suppose E1, E2, and E3 are any events in a given experiment. Use Theorem 2 on page 450 to help you derive the probability that E1 or E2 or E3 occurs. That is, derived Prob(E1 or E2 or E3).

Theorem 2: The General Sum Rule:If E1 and E2 are any events in a given experiment, then the probability that E1 and E2 occurs is given byProb(E1 or E2) = Prob(E1) + Prob(E2) - Prob(E1 and E2)If E1 and E2 are disjoint, then E1 n E2 = 0 , so Prob(E1 and E2) = 0.

Read the excerpt from the strange case of dr jekyll and mr. hyde what do dr. jekyll's thoughts reveal about him in this excerpt? [t]he inmates of my house were locked in the most rigorous hours of slumber, and i determined, flushed as i was with hope and triumph, to venture in my new shape as far as to my bedroom. i crossed the yard, wherein the constellations looked down upon me, i could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to he is jealous of those who can sleep through the night. he is revered for his scientific advances. he is interested in studying the movements of the stars he is proud and enthusiastic about his initial results.