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Subset

usgb/ˈsʌbset/Volume
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LampPro Tip 1/3
Not Always NumbersPlay
A subset can include any related items, not just numbers. SlidePainters such as Monet and Degas are a subset of Impressionist artists.
LampPro Tip 2/3
Proper vs ImproperPlay
A proper subset doesn't contain all elements of the original set. The set {1, 2} is a proper subset of {1, 2, 3}.
LampPro Tip 3/3
Inclusion Doesn't Equal EqualityPlay
A set with all items from another set is a subset but not vice versa. SlideThe set of all fruits is a subset of all foods, but they are not the same.