. either Oliver or Gemma will be elected. b. either Rey or Oliver will be elected. c. neither Rey nor Gemma will be elected.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.3: Conditional Probability; Independent Events; Bayes' Theorem
Problem 44E
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Hi! My topic is about Probability of Mutually Exclusive and Not Mutually Exclusive Events. If applicable, please use this as reference on the solutions in the subparts. Thank you!

The probabilities of three students, Rey, Oliver and Gemma, to be elected as Student Council president are 2/9, 1/6 and 1/12 respectively. Find the probability that:

a. either Oliver or Gemma will be elected.
b. either Rey or Oliver will be elected.
c. neither Rey nor Gemma will be elected. 

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