Assignment 2

course Mth 151

ϽSazըdassignment #002

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002. `Query 2

College Algebra

09-10-2007

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assignment #002

002. `Query 2

College Algebra

09-10-2007

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12:18:18

2.2.24 U={a,b,...,g}, A={a,e}, B={a,b,e,f,g}, C={b,f,g}, D={d,e} Is C ps U?

Is the statement true or false and why?

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RESPONSE -->

True, because all of C is contained in U

confidence assessment: 3

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12:22:04

Query 2.2.30 phi s D

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RESPONSE -->

There are no elements in phi so it is not possible to find any elements that are not in D.

confidence assessment: 3

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12:24:53

2.2.33 D not s B

Is the statement true or false and why?

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RESPONSE -->

True, because D contains a letter (d) that is not in B.

confidence assessment: 3

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12:33:57

2.2.36 there are exactly 31 subsets of B

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RESPONSE -->

No, there are 32 (2^5)

confidence assessment: 3

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12:35:40

Query 2.2.40 there are exactly 127 proper subsets of U

Is the statement true or false and why?

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RESPONSE -->

True, there are 127 proper subset (2^7 - 1) = 128-1=127

confidence assessment: 3

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12:39:50

Query 2.2.48 U={1,2,...,10}, complement of {2,5,7,9,10}

What is the complement of the given set?

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RESPONSE -->

U' = [1,3,4,6,8}

confidence assessment: 3

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12:41:56

query 2.2.63 in how many ways can 3 of the five people A, B, C, D, E gather in a suite?

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RESPONSE -->

8 ways 3 people can gather (2^3)

confidence assessment: 3

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Your answers didn't include the given solutions or self-critiques. Most of your answers were correct but your answer on the last question was not (there are 10 subsets of 3 for the given 5-element set). The given solution explains why.

&#To run the program correctly you click on the Next Question/Solution button (top left), enter your response in the Answer box (the box at top right), click on the Enter Response button (above the top right box), then again on the Next Question/Solution botton (top left) to see the solution, and finally enter your response or self-critique in the Answer box and click on Enter Response.

You then start the process over with the next question, clicking on the Next Question/Solution button at top left, etc.

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