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A survey of 130 students found that 79 have visited the uni medical centre in person, 32 have been to the EN building and 17

A survey of 130 students found that 79 have visited the uni medical centre in person, 32 have been to the EN building and 17 have been to both locations. A person is selected at random. Express the following as fractions or decimals and show your working.

a) If they have visited the medical centre, then what is the probability that they have visited EN?

b) If they visited EN, then what is the probability that they have visited the medical centre?

c) What is the probability that they have visited the medical centre or EN?

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