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Mathematics 11 Online
OpenStudy (anonymous):

I challenge you guys to find this one out! The zip code of a location consists of five digits chosen from the set Z shown below. Z = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} The set L represents the digits in the zip code for Key Largo. L = {3, 3, 0, 3, 7} The set K represents the digits in the zip code for Killarney. K = {3, 4, 7, 4, 0} How many odd numbers are in the set ~ (L ∪ K)? (Note: Zero is an even number.)

OpenStudy (anonymous):

challenging....

OpenStudy (anonymous):

ikr lol

OpenStudy (dumbcow):

umm \[(L \cup K) = {0,3,4,7}\] so there are 2 odd numbers

OpenStudy (anonymous):

Hey we both have 44 smart score :O and okay dumbcow 0.o ill call you db lol!

OpenStudy (anonymous):

can anyone else varify what dc said just be sure? Trying to learn alot

OpenStudy (swissgirl):

Ummm odes the ~ represent the negation?

OpenStudy (swissgirl):

does*

OpenStudy (swissgirl):

Cuz if it does then the answer would differ

OpenStudy (anonymous):

I forgot what the sign means let me search it up in my lesson

OpenStudy (swissgirl):

@dumbcow What do you think?

OpenStudy (anonymous):

6 IDK????????!!!!!!!!!!!

OpenStudy (anonymous):

idk if this helps lol As shown in the examples above, the complement of a set is the set of values within the sample space that do not belong to that set. For example, If A is the set of odd numbers in the sample space of {0,1,2,3,4,5,6,7,8,9}, the complement of A, or ~A, is all of the numbers in this set that are not odd. Therefore, ~A would be {0,1,2,3,4,5,6,7,8,9} = {0,2,4,6,8}

OpenStudy (anonymous):

Still looking in my lesson though

OpenStudy (swissgirl):

Ok yes so in this case ~ means the negation

OpenStudy (dumbcow):

yes @swissgirl is right, i didnt even pay attention to that

OpenStudy (anonymous):

okay its okay dc

OpenStudy (anonymous):

haha you guys are working harder then me

OpenStudy (swissgirl):

*than

OpenStudy (dumbcow):

also to clarify, do they want to know how many odd "zip codes" there are or how many odd digits there are?

OpenStudy (mertsj):

\[~ LUK={1, 5, 6, 8 , 9}\]

OpenStudy (mertsj):

3 odd numbers.

OpenStudy (swissgirl):

(L U K) is the set of all the elements of L AND K Since L = {3, 3, 0, 3, 7} and K = {3, 4, 7, 4, 0} So (L U K) = {0,3,4,7} Did you follow that?

OpenStudy (anonymous):

No i dont but i think mertsj might have it?

OpenStudy (anonymous):

Yes i do @swissgirl

OpenStudy (swissgirl):

Ok Now ~(L U K) means all the elements from the set Z that are NOT in L and K

OpenStudy (swissgirl):

So what would these elements be? What elements are in the set ~( L U K) ?

OpenStudy (mertsj):

~ LUK={1,5,6,8,9} 3 odd numbers.

OpenStudy (anonymous):

is that right? ^

OpenStudy (mertsj):

Sorry...everything did not print before.

OpenStudy (swissgirl):

Yes he is correct but do you follow ?

OpenStudy (anonymous):

and its okay @Mertsj and yes @swi

OpenStudy (anonymous):

@swissgirl *

OpenStudy (swissgirl):

Ok its really simple once you get the hang of it So just play around with a few more problems and then u'll know it in ur sleep

OpenStudy (anonymous):

okay wish I could give you both best response

OpenStudy (swissgirl):

Give it to Mertsj :)

OpenStudy (anonymous):

:P okay thank you alot though

OpenStudy (anonymous):

someone gave mertsj one so i gave it too you lol

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