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There are 280 students in a room.. 200 of them like coffee and 150 of them like donuts. a) What is the minimum number of

There are 280 students in a room.. 200 of them like coffee and 150 of them like donuts.

a) What is the minimum number of students who like both coffee and donuts?

b) Assume that 100 students like both coffee and donuts. How many students do not like coffee and do not like donuts?

(explain ur answers with proof) pls be correct

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