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Mathematics 4 Online
OpenStudy (anonymous):

if U = {0,1,2,3,4,5,6,7,8,9}, the sets of digits in our decimal system, and A = {0,1,2,3,4,5}, B = {2,3,4,5}, C = {4,5,6,7}, D = {6,7,8,9} FIND AND TABULATE: 1. B' U D' 2. A' intersection B'

hartnn (hartnn):

know what does B' mean ?

OpenStudy (anonymous):

yes, its complement :)

OpenStudy (anonymous):

just verifying it though bc my answer is different compared to the answer given by the book and idk why :'( HELP

hartnn (hartnn):

whats your answer ? and how did you get it ? I'll help you identify the error!

OpenStudy (anonymous):

okaay :D

hartnn (hartnn):

B' = {0,1,6,7,8,9} D' ={0,1,2,3,4,5} B' U D' = {...}

OpenStudy (anonymous):

so for no.1 U (its the universal set) ???

hartnn (hartnn):

thats correct, the answer is U :)

hartnn (hartnn):

and for no. 2, whats your answer ?

OpenStudy (anonymous):

okaay! but the answer in the book is {0,1,6,7,8,9} XD stupid book haha

OpenStudy (anonymous):

uhmm, #2 = {6,7,8,9} ???

hartnn (hartnn):

that is also correct! so #2 =D

OpenStudy (anonymous):

soo the book's wrong? hahaha HOWW XD

hartnn (hartnn):

maybe the typing mistake A' U B' is actually {0,1,6,7,8,9}

hartnn (hartnn):

probably the book is asking for B' U A' for the 1st one for 2nd one, whats the answer given in the book ?

OpenStudy (anonymous):

{0,1,2,3,8,9} XD haha

hartnn (hartnn):

tell your book, 'go home, you're drunk' :P

OpenStudy (anonymous):

yeah, I think it's a typing mistake :D thankyou soo much for clearing that up though :) btw, you've been helping me since high school, now I'm in my 1st yr in college hahaha :D

OpenStudy (anonymous):

HAHAHAHAHAHA YEP WILL DO THAAANKS AGAIN! :D

hartnn (hartnn):

welcome ^_^ always happy to help :)

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