Mathematics, 27.08.2019 21:30, Wintersavannah

Which statement is true for the set of natural numbers?
a. the set is closed under addition and closed under subtraction
b. the set is closed under addition and not closed under subtraction
c. the set is not closed under addition and closed under subtraction
d. the set is not closed under addition and not closed under subtraction

Answers: 1

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Which statement is true for the set of natural numbers?
a. the set is closed under addition a...