Does this table show a binary operation? Yes No
Does this table show a binary operation? Yes No. Is there an identity element? If so, what is it? No (b) Yes, p Yes, q (d) Yes, r (e) Yes, s (f) Yes, t (g) Yes, u (h) Yes, v (i) Yes, w. Does p have an inverse? If so, what is it? No (b) Yes, p Yes, q (d) Yes, r
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