Survey Diagram for a Mathematical Venn Question
A survey was conducted among 76 patients admitted to a hospital cardiac unit during a​ two-week period. The data of the survey are shown below.

Let B = the set of patients with high blood pressure.
Let C = the set of patients with high cholesterol levels.
Let S = the set of patients who smoke cigarettes.

Use the conditions given above to answer the following questions.
a. Find the number of these patients that had either high blood pressure or high cholesterol​ levels, but not both.
b. Find the number of these patients that had fewer than two of the indications listed.
c. Find the number of these patients that were smokers but had neither high blood pressure nor high cholesterol levels.
d. Find the number of these patients that did not have exactly two of the indications listed.

An Example of InstructionsHistory final essays

In no less than 800 and not more than 1000 words: Discuss the causes of conflict in twentieth-century Europe. Not so much the countries in particular, but rather what kinds of pressures caused the stresses that erupted in wars, revolutions, and/or civil wars? Grading is based on accuracy, thoroughness, insight, legibility, and the demonstrated use of the assigned reading(s). Any essays scoring higher than a 15% plagiarism match in Turnitin will not be accepted. A "0" grade will be attributed.
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