Question

The title of your Venn diagram is your universal set. Give your universal set a name and description. Circle A is set A, and circle B is set B.

5. Find A ∪ B and explain what that number represents.
6. Find A ∩ B and explain what that number represents.
7. Find A′ and B′and explain what that number represents.
8. Which word would you use to describe the value of v in the Venn diagram: subset, union, intersection, complement, or cross multiplication product? Explain your answer in complete sentences.

Answer 1

i need help im confused how should i find the A ∪ B , A ∩ B, and the A′ and B′ of the sets in the venn diagram?

Answer 2

i dont think it would seem right if i wrote A ∪ B = {5,3} would it?

Answer 3

A U b is not {5,3}

Answer 4

do you know what A \(\cup\) B means?

Answer 5

can u help me find out what A ∪ B is then? i know A ∪ B means to find the union of two sets

Answer 6

yes it's the union of set A and set B

Answer 7

its when you bring two sets together isnt it?

Answer 8

right

Answer 9

first step is to find set A and set B...can you do that?

Answer 10

ok so isint set A = 3 and set B = 5 so wouuldnt the union be {5 and 3}?

Answer 11

how did you get A = 3?

Answer 12

sorry i confused 3 with 2.,,,, set a = 2

Answer 13

hmm...you're close

Answer 14

that's the whole set B

Answer 15

what you're doing is excluding the intersection

Answer 16

i got this because in my venn diagram there is only the digit 2 in the supposedly set A so i assumed that set a would be just 2 and there goess the same for set B

Answer 17

you still have to include the intersection

Answer 18

what do you mean?

Answer 19

you know what the intersection is right?

Answer 20

or how would i do that?

Answer 21

intersection of two or more sets represents the itms that are tthe same in both sets, right?

Answer 22

i meant in the venn diagram

Answer 23

you know where it is right?

Answer 24

yah its in the middle where the two circles overlapp

Answer 25

so its 3

Answer 26

anyway...i just wanted to know if you knew the intersection....

back to my explanation


you agree that a circle represents a set right?

Answer 27

yes... i guess

Answer 28

i mean i think it does

Answer 29

that means...in a venn diagram...
the whole circle is set A. agree?

Answer 30

ooo so for set A id have to include not only the digit in the circle A for skittles (2) but also the digit in the middle (3)

Answer 31

?

Answer 32

yes. my point exactly

Answer 33

that means A = {2,3}

Answer 34

soo set B = {5,3}?

Answer 35

and therefore A ∪ B = {2,3,5}?

Answer 36

right

Answer 37

you learn fast

Answer 38

ok so then ...
A ∪ B = { 2, 3, 5}
A ∩ B = {3}

Answer 39

yes

Answer 40

ok so how would i find Find A′ and B′

Answer 41

do you know what A' means?

Answer 42

waiit i think i got it, would A' = { 5} and B' = { 2}?

Answer 43

close... but not exactly

Answer 44

i know that A' would mean the compliment of A which means that it would contain all elements in the universal set exept tthose in set A

Answer 45

A' is ALL numbers that is not included in set A...that means, you don't just look at the venn diagram...you also look *outside* of it

Answer 46

ooo i thik i clicked a lightbulb hold on a sec

Answer 47

wonderful

Answer 48

A' = {5,3} and B' = {2,3} am i right? cuz the universal set would be {5,3,2}

Answer 49

close.... but not exactly

Answer 50

oh my this looks interesting :D

Answer 51

what did i get wrong?

Answer 52

3 is the intersection of A and B...that means it's still included in set A

Answer 53

look at what i said earlier

Answer 54

about the complement of A

Answer 55

ooo i think i forgot to mention the 2 outside of the venn diagram ddnt i? therefore would A' = {2,5}? and B' = {2}

Answer 56

nice. you got it

Answer 57

ok now for the last question, Which word would i use to describe the value of v (the little 2 outside of the ven diagram) in the Venn diagram: subset, union, intersection, complement, or cross multiplication product?

Answer 58

well do you know what the 2 outside the venn diagram means?

Answer 59

all i know is that two people chose neither of the candies in my survey so therefore they are there but i dont know what exactly it means

Answer 60

here's a hint... it means 2 is *not included* in the venn diagram

Answer 61

which word do you think is synonymous to *not included*?

Answer 62

hmm let me think...