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Liberal Arts. Mid-Term Review. Mid-Term Review. List the four steps in Polya’s problem-solving method. Understand the problem Devise a plan Carry out your plan Check your answer. Mid-Term Review. Draw a diagram that represents a rectangle whose length is 12 times the size of its width. - PowerPoint PPT Presentation
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LIBERAL ARTSMid-Term Review
Mid-Term Review List the four steps in Polya’s problem-
solving method. Understand the problem Devise a plan Carry out your plan Check your answer
Mid-Term Review Draw a diagram that represents a
rectangle whose length is 12 times the size of its width
Mid-Term Review Consider the following diagram, which
represents various groups of people. A is the group of people who like hot-dogs, and B is the group of people who like hamburgers. U represents everyone at the tail-gate. Describe the people in each region. r1 represents those who like hot-dogs and not
hamburgersr2 represents those who like hamburgers and not hot-dogsr3 represents those who like both hd’s and hambgrs
r4 represents those who like neither
Mid-Term Review List all of the combinations of heads and
tails if a nickel or penny are flipped.
Mid-Term Review Complete the following sequences for
the next 4 terms… 3, 5, 9, 17, 33…
1, 4, 9, 16, …
(a + 1), (b + 3), (c + 4)…
Mid-Term Review Solve the following problem by making a
series of guesses. In August of ’07, three of the top-selling video game players were the Wii, Xbox 360, and PS3. The total sales (in thousands) among the three were 812 units. The Xbox sold 15 more than twice the PS3, while the Wii sold 4 less than Xbox and PS3 combined. How many Wiis were sold.
Mid-Term Review
405
Mid-Term Review Explain the difference between inductive
and deductive reasoning Inductive reasoning is using patterns and
observations to define an action Deductive reasoning is using proven facts,
laws, and truths to define an action
Mid-Term Review Use an alternative method to write each
set: T = {A-, A+, B-, B+, AB-, AB+, O-, O+}
B = {color of the American flag}
A = {a: a is a counting number less than 20 and is evenly divisible by 3}
Mid-Term Review Determine if the following are well-
defined or not well-defined sets. {x: x lives in Michigan}
Well defined {2, 4, 6, 8…}
Well defined {t: t has traveled much}
Not well defined {y: y has an easy cell phone number to
remember} Not well defined
Mid-Term Review Give an example of the following:
Give a statement such that the answer has an empty set { } T = {x: x are students @ LLT that were born
before 1980} Define Universal set:
The set of all elements under consideration in a given discussion; U
Mid-Term Review Find the cardinal number, n(A)=…, for the
following sets A = {1, 3, 5, 7… 11}
n(A) = 6 A = {3, 4, 5… 13}
n(A) = 11 A = {x: x is a living American president born
before 1900} n(A) = 0
Mid-Term Review Describe each of the following sets as
finite or infinite: {x: x is a word written by Shakespeare}
Finite {y: y is the number of people who have
walked on the moon} Finite
{y: y is a number between 4 & 5} Infinite
{x: x is an element of the empty set} Finite
Mid-Term Review Explain the difference between subset
and proper subset. Subsets are when all elements of A are also
in B; however, they do not have to equal Proper subsets are when all elements of A
are also in B, but they cannot be equal
Mid-Term ReviewAthlete Event Medal Country
Adria Hurdles Gold SpainBonnie 100-m sprint Silver USACharles Shot put Gold BritainDaveed Weightlifting Bronze RussiaElaina 100-m sprint Gold PersiaFrank Hurdles Silver USAGregory Shot put Silver USA
T = set of 100-m sprintersA = set of U.S. athletesG = set of gold medal winners
True or False?
Mid-Term ReviewAthlete Event Medal Country
Adria Hurdles Gold SpainBonnie 100-m sprint Silver USACharles Shot put Gold BritainDaveed Weightlifting Bronze RussiaElaina 100-m sprint Gold PersiaFrank Hurdles Silver USAGregory Shot put Silver USA
T = set of 100-m sprintersA = set of U.S. athletesG = set of gold medal winners
True or False?
Mid-Term ReviewAthlete Event Medal Country
Adria Hurdles Gold SpainBonnie 100-m sprint Silver USACharles Shot put Gold BritainDaveed Weightlifting Bronze RussiaElaina 100-m sprint Gold PersiaFrank Hurdles Silver USAGregory Shot put Silver USA
T = set of 100-m sprintersA = set of U.S. athletesG = set of gold medal winners
True or False?
Mid-Term ReviewAthlete Event Medal Country
Adria Hurdles Gold SpainBonnie 100-m sprint Silver USACharles Shot put Gold BritainDaveed Weightlifting Bronze RussiaElaina 100-m sprint Gold PersiaFrank Hurdles Silver USAGregory Shot put Silver USA
Using the definitions of subsets and proper subsets, give an example of a true statement
T = set of 100-m sprintersA = set of U.S. athletesG = set of gold medal winners
Mid-Term Review Determine if the following sets are equal
and equivalent: {1, 2, 3, 4} and {4, 3, 2, 2}
Not equal; equivalent {a, b, c…m} and {1, 2, 3…13}
Not equal; equivalent {1, 3, 5, 2, 4, 6} and {1, 2…6}
Equal; equivalent {red, white, blue} and {colors}
Not equal; not equivalent
Mid-Term Review What is another name for the term
equivalent? One-to-one correspondence
Mid-Term Review Determine whether each statement is
true of false: {collie, poodle, beagle, chihuahua, bulldog}
is a proper subset of {bulldog, chihuahua, beagle, poodle, collie} False
{rose, daisy, sunflower, orchid} is a proper subset of {rose, orchid, sunflower, daisy, carnation} True
Mid-Term Review List all of the two-element subsets of the
set {1,2,3,4} {1,2}, {1,3}, {1,4}, {2,3}, {2,4}, {3,4}
List all of the subsets for of the set {1,2,3,4} { }, {1}, {2}, {3}, {4}, {1,2}, {1,3},
{1,4}, {2,3}, {2,4}, {3,4}, {1,2,3}, {1,2,4}, {2,3,4}, {1,3,4} {1,2,3,4}
Mid-Term Review Domino’s Pizza wants to advertise that
there are over 500 ways to order your pizza, how many different toppings must they have available? At least 9 toppings
Mid-Term Review If a set has 30 elements, there will be
2^30 = 1,073,741,824 subsets. If you could write one subset every second, how long would it take you to list all 2^30 subsets? (Hint: There are 365 x 24 x 60 x 60 seconds in a year – ignoring leap years) Approximately 34.9 years
Mid-Term Review Draw each of the following set
operations:
Mid-Term Review Find the intersection of the two sets.
1, 3, 5, 6, 8
2, 3, 6, 7, 8
3, 6, 8
A
B
A B
1, 2, 3, , 10
1, 3, 5, 7, 9
2, 4, 6, 8, 10
U
A
A
Mid-Term Review Given U, find the complement of A.
Mid-Term Review Let U = {1,2,3,4,5}, A = {1,3,5}, B =
{1,2,3}
Find (A U B)’ {4}
Find A’ U B’ { }
Mid-Term Review Let U = {1,2,3,… 10}, E = {x: x is even},
B = {1,3,4,5,8}, and A = {1,2,4,7,8}
Find (A U B)’ intersect (E’ U A)
Mid-Term Review• Example: A television network
conducted a market survey. The following information on viewing habits was obtained. Determine how many
people do not want to see reality shows and how many prefer to
watch TV on the weekend?
Mid-Term Review The universal set contains three
subsets.
Mid-Term Review Do not want to see reality shows =
12 + 11 + 4 + 13 = 40 Prefer to watch TV on weekend =14
+ 18 + 4 + 13 = 49