Concept
What subset relations are stated for S, J, G, and F?
Stephen Davies, Ph.D. Version 2.2.2 Through Discrete Mathematics A Cool Brisk Walk / Chapter 1
"11. Is S ⊆ J ? No. 12. Is G ⊆ F ? Yes, since the two sets are equal. 13. Is G ⊂ F ? No, since the two sets are equal, so neither is a proper subset of the other."
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