A survey of 100 bank customers revealed that 58 of them have a savings account, 63 of them have a checking account, 22 of them have a savings account and a loan, 16 of them have a checking account and a loan, 27 of them have only a checking account, 12 have a savings account and a checking account and a loan. Assume that every customer has at least one of the services. How many customers have a loan? ○ 11 37 38 50 none of these
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I need help with this problem and an explanation for the solution described below (Discrete mathematics) - Operations on sets, Venn Diagram for counting and set operations, Permutations, Combinations:
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