He table shows the results of a poll of 200 randomly selected juniors and seniors who were asked if they attended prom. Find the probability of each of the events.
Express your answer as a fraction, using the backslash. Example: 17 would be written as 1/7.
a) P (a junior who did not attend prom)
b) P (did not attend prom | senior)
c) P (junior | attended prom)
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