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Mathematics 12 Online
OpenStudy (anonymous):

{d,e,f,g} (c with a line under it) {a,b,c,d,e,f,}. Is it false because ''g'' isn't apart of both sets?

OpenStudy (welshfella):

the c with a line under it means 'sub set of'. Yes you are right

OpenStudy (anonymous):

i actually got it right lol

OpenStudy (welshfella):

yea

OpenStudy (welshfella):

theres another symbol that looks like a c which also means sub set of but i can't remember the difference between them

OpenStudy (anonymous):

what does the zero with a line slashed through it mean?

OpenStudy (welshfella):

that means the empty set A set with no members.

OpenStudy (anonymous):

i've got a question here it says 14 0 w/ a slash {1,2,3,4,...39,40}

OpenStudy (anonymous):

would 14 have to be in brackets before it can be considered part of the subset?

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