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10 questions from this quiz
CAII
x∘e=e∘x=xx \circ e = e \circ x = xx∘e=e∘x=x
Combining two elements gives an element in set
An inverse x−1x^{-1}x−1 where x∘x−1=ex \circ x^{-1} = ex∘x−1=e
a(bc)=(ab)ca(bc) = (ab)ca(bc)=(ab)c
The number of elements in the group
Smallest nnn where xn=ex^n = exn=e
Table is symmetric about leading diagonal
2n2n2n
Element producing all others by repetition
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