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Mathematics, 21.08.2019 04:30 loran55667

Which equations show that the set of whole numbers is closed under multiplication?
choose all answers that are correct.
a.
–1 • –1 = 1
b.
0 • –1 = 0
c.
0 • 2 = 0
d.
2 • 1 = 2

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Which equations show that the set of whole numbers is closed under multiplication?
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