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if a student passes a math test 65% of the time and a math quiz 85% of the time, what is the probability that the student passes at least one test or quiz?

Mathematics
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wouldn't it be \[\frac{ 13 }{ 20 }\] for the math tests; And then \[\frac{ 17 }{ 20 }\] for the math quizzes?? you may want to check my work and get a second opinion
it would be 1, minus the probability that they pass no tests

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