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If set D is a subset of set E, then which of the following is true? -D ∩ E = D -D ∩ E = E -D ∩ E = Ø would it be the first one D ∩ E = D?

Mathematics
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B
could you explain it? (my lesson didn't explain it well)
just google it the answer is most likely B

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Other answers:

one sec
i would've googled it anyways, but there are no good explanations.
do you know what a subset is ?
slightly.
wait its A!!!! JUST GOOGLE IT RIGHT NOW LOL
woohoOO :D
reallyprettyboy, i don't think you understand. i want and explanation. :|
oh ok i'll find one dont worry :)
if A is the subset of B, then all elements of A are present in B ex : A={1,2} B={1,2,3,4} notice all elements of A are in B ok ?
|dw:1358421673278:dw|
ah, okay.
so, if now you have to find the intersection (common elements) the it would be entire set A, right ?
similarly, since D is a subset, intersection is set D itself.
oh okay:) so it is D ∩ E = D.
yup.... :)
yes! :)
yay, thank you two:)
welcome ^_^
you're very welcome... :D

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