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Six hundred adults were asked whether or not they watch for calories and fat content when they buy groceries. The following table gives the two-way classification of their responses, where yes means that an adult watches for calories and fat content and no means he/she does not watch. If one adult is randomly selected from these 600 adults, find the following ptobabilities.

Give exact answers in fract

a. P(man or no)=

b. P(yes or woman)=

c. P(no opinion or Yes)=