A pharmaceutical company conducted a study to evaluate the effect of an allergy relief medicine. 200 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 54 experiences relief of both itchy eyes and skin rash. What is the probability that a patient who takes the drug will experience relief of at least one of the two symptoms?
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