1-Let A1 and A2 be subsets of a set A. Draw Venn diagram of this situation and s

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1-Let A1 and A2 be subsets of a set A. Draw  Venn diagram of this situation and shade in the subsets: A1?A2, A1^c ? A2, A1? A2^c,

and  a partition of A.
( A1^c means A1 prime, A2^c means A2 prime)

2- (a) A group of 30 students were surveyed and it was found that 18 of them took calculus and 12 took c++. if all students took at least one course, how many took both calculus and c++? ILLUSTRATE USING VENN DIAGRAM
(b) what is the answer to the question in part (a) if five students did not take either of the two courses?? illustrate using  ven diagram

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