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Mathematics 7 Online
OpenStudy (anonymous):

S={scottish men} G={good footballers} Express in words G∩S={ }

OpenStudy (amistre64):

there are no G who are S perhaps?

OpenStudy (anonymous):

yeah how?????????

OpenStudy (across):

That's the set of Scottish men who are good footballers.

OpenStudy (anonymous):

still dont get it

OpenStudy (anonymous):

∩=or right??

OpenStudy (amistre64):

G good fb players S scots n have in common = is {} none

OpenStudy (amistre64):

u = or n = and

OpenStudy (amistre64):

There is = no {} G who are S

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

so if it was just G∩S that would be G are S??

OpenStudy (amistre64):

right; GnS means: good fb ps who are scots

OpenStudy (anonymous):

does GUS mean the same thing/

OpenStudy (amistre64):

no, it used different notation, which suggests it means something else

OpenStudy (amistre64):

GuS are all good fb ps and all scots

OpenStudy (anonymous):

so the ∩= some and U= all

OpenStudy (amistre64):

that is a descent way to remember it

OpenStudy (amistre64):

u is to unite; take everything from one pot and mix it in with all the stuff from another pot; combine it all together in a big stew

OpenStudy (amistre64):

n is to be nitpicky; take out what each pot has the same. take the corn from potA and the corn from potB and place them together into potC

OpenStudy (anonymous):

yeah thats sense, especially when you draw a venn diagram.

OpenStudy (anonymous):

your brilliant

OpenStudy (amistre64):

;) thnx

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