4. There are eight tasks to do this week. The tasks are randomly scheduled to be done on Monday, Tuesday, Wednesday, Thursday, or Friday, independently of each other. What is the probability that there is nothing scheduled for Friday? You can (and in fact, should) leave your answers unsimplified on this question. That is, if the answer is 1-G)6, leave your answer in this form and don't attempt to simplify it.

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