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10 questions from this quiz
Closure
No, 23\frac{2}{3}32 is not in Z\mathbb{Z}Z
a∗b=b∗aa * b = b * aa∗b=b∗a for all aaa and bbb
No, 25≠522^5 \neq 5^225=52
(a∗b)∗c=a∗(b∗c)(a * b) * c = a * (b * c)(a∗b)∗c=a∗(b∗c) for all
000
Row starting with bbb, column headed by ccc
Column identical to leftmost column
The operation is commutative
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