Assigments 4 5

course mth 151

??G????k????z???assignment #001001. Sets

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Liberal Arts Mathematics I

06-09-2007

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14:02:33

`q001. Note that there are 4 questions in this assignment.

`q001. Let A stand for the collection of all whole numbers which have at least one even digit (e.g., 237, 864, 6, 3972 are in the collection, while 397, 135, 1, 9937 are not). Let A ' stand for the collection of all whole numbers which are not in the collection A. Let B stand for the collection { 3, 8, 35, 89, 104, 357, 4321 }. What numbers do B and A have in common? What numbers do B and A' have in common?

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RESPONSE -->

B and A have numbers 237, 3972, 89, and 4321 in common.

confidence assessment: 2

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14:05:20

If we assume that dark brown, light brown or blonde, and bright red hair are mutually exclusive (i.e., someone can't be both one category and another, much less all three), then we have at least 8 + 2 + 9 = 19 people in the room, and it is not possible that we have exactly 17.

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RESPONSE -->

If tyou have atleast 19 then you couldn't have 17

17 is less that 19

self critique assessment: 3

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14:05:53

`q003. I have in a room 6 people with dark hair and 10 people with blue eyes. There are only 14 people in the room. But 10 + 6 = 16, which is more than 14. How can this be?

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RESPONSE -->

2 people have both dark hair and blue eyes

confidence assessment: 3

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14:07:01

`q004. In a set of 100 child's blocks 60 blocks are cubical and 40 blocks are cylindrical. 30 of the blocks are red and 20 of the red blocks are cubical. How many of the cylindrical blocks are red?

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RESPONSE -->

10 cylinder blocks are red

confidence assessment: 2

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?|???X????????assignment #005

005. `Query 5

College Algebra

06-09-2007

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14:09:54

Query 2.5.12 n({9, 12, 15, ..., 36})

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RESPONSE -->

confidence assessment:

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14:10:31

Query 2.5.12 n({9, 12, 15, ..., 36})

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RESPONSE -->

(18,21,24,27,30,33)

confidence assessment: 2

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14:13:43

2.5.36 1-1 corresp between counting #'s and {-17, -22, -27, ...}

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RESPONSE -->

(-17,-22,-27,-32,-37,-42,-47,-52,-57,-67)

confidence assessment: 3

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Good. Let me know if you have questions.