PROBEMS IN PROBABILITY An experiment with three outcomes has been repeated 50 times, and E1 occurred

PROBEMS IN PROBABILITY
An experiment with three outcomes has been repeated 50 times, and E1 occurred 20 times, E2 occurred 13 times, and E3 occurred 17 times. Assign probabilities to the outcomes. What method did you use? Why?
A pharmaceutical company conducted a study to evaluate the effect of an allergy relief medicine;250 patients with symptoms that included itchy eyes and a skin rash received the new drug. The results of the study are as follows: 90 of the patients treated experienced eye relief, 135 had their skin rash clear up, and 45 experienced relief of both itchy eyes and the skin rash. What is the probability that a patient who takes the drug will experience relief of at least one of the two symptoms?