Chapter 6: Problem 3
Write the set in set-builder notation. $$ \\{3,4,5,6,7\\} $$
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Chapter 6: Problem 3
Write the set in set-builder notation. $$ \\{3,4,5,6,7\\} $$
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Let \(A, B\), and \(C\) be subsets of a universal set \(U\) and suppose \(n(U)=100, n(A)=28, n(B)=30\), \(n(C)=34, n(A \cap B)=8, n(A \cap C)=10, n(B \cap C)=15\) and \(n(A \cap B \cap C)=5\). Compute: a. \(n[A \cap(B \cup C)]\) b. \(n\left[A \cap(B \cup C)^{q}\right.\)
A new state employee is offered a choice of ten basic health plans, three dental plans, and two vision care plans. How many different health-care plans are there to choose from if one plan is selected from each category?
Data released by the Department of Education regarding the rate (percentage) of ninth-grade students who don't graduate showed that, out of 50 states, 12 states had an increase in the dropout rate during the past 2 yr. 15 states had a dropout rate of at least \(30 \%\) during the past 2 yr. 21 states had an increase in the dropout rate and/or a dropout rate of at least \(30 \%\) during the past 2 yr. a. How many states had both a dropout rate of at least \(30 \%\) and an increase in the dropout rate over the 2 -yr period? b. How many states had a dropout rate that was less than \(30 \%\) but that had increased over the 2 -yr period?
Of 50 employees of a store located in downtown Boston, 18 people take the subway to work, 12 take the bus, and 7 take both the subway and the bus. How many cmployees a. Take the subway or the bus to work? b. Take only the bus to work? c. Take cither the bus or the subway to work? d. Get to work by some other means?
List the elements of the set in roster notation. $$ \\{x \mid 2-x=4 \text { and } x \text { is an integer }] $$
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