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In this problem, we are given that there is a class and this consists of 35 number of students, amongst which there are three number of seniors.
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The class also has eight juniors, five freshmen, and eight number of sophomores.
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And one student is chosen randomly.
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So we have to first find the probability that the student who is selected is a junior.
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So we will consider e here as the event of choosing a student who is a junior.
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So the number of outcomes which will be favorable to this event e, it will be the number of juniors, which is eight.
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And the total number of outcomes, well this will be equal to the total number of students in the class, which is 35.
00:46
And to get the probability, we will simply use this formula, according to which we see that the probability of the event e, this is obtained when we divide the number of outcomes that's favorable to the event with the total number of outcomes...