Math, asked by shradhdha281393, 7 months ago

Let ℤ be the set of all integers and ℕ is a set of all natural numbers. Which of the following is a group? (Where+ is an ordinary addition and − is an ordinary subtraction) (a) (ℤ, +) (b) (ℤ, −) (c) (ℕ, +) (d) (ℕ, −)

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Answered by aymaanr5

0

Answer:

idk so sorry could help u

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