course 151-41
4 June 2010 at 5:03 p.m.
Q1: counting #'s 4 to 14, list the elementsA1: The elements of a set of numbers is each whole number in the set from start of set to end of set. 4-14 is 4,5,6,7,8,9,10,11,12,13,14
3
Ok
Q2: list the set of presidents between LBJ and Clinton
A2: The abbreviation of a set is {} so the answer is {LBJ, Richard Nixon, Gerald Ford, Jimmy Carter, Ronald Regan, George HW Bush, William Clinton}
Q3: finite or infinite: set of rat #'s 0 to 1
A3: With any set of numbers such as 0-1 you will have infinite whole numbers in between the two numbers. Finite means the numbers go on forever therefore these numbers can not be continuing on forever because once the numbers reach 1 it is the end.
2
Use correct terminology such as integers, rational numbers, etc
Q4: A={x|x is a U.S. senator}What is n(A) and why?
A4: A is equal to x and x is a U.S. Senator so A would then have to be the number of U.S. Senator’s
2
Explain that A is the number envolved in the set so there are two senator’s per state so the answer is A=100
Q5: {x|x is neagtive number}
A5: You are needing to find out what is in the set so therefore you can determine if a number is in the set or not. Thus you determine that any negative number is in the set.
2
Need to define the set as a well- defined set because you can determine by the set what element is in it or not in it.
Q6: This was not assigned, but you should be able to answer based on your work on similar problems: It is or is it not true that 2 is not subset of {7,6,5,4}?
A6: Two is a number which would be in a set so the statement is true because the statement was that 2 is not a subset because 2 is just a number
3
ok
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I know this is getting redundant, and you haven't yet had a chance to modify the way you use these documents. Still no problem, but do take note for future submissions.
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