Which sets of numbers are closed under subtraction? Choose all answers that are correct. A. odd natural numbers B. rational numbers C. {0, 1} D. {0, 1, 2} sorry for bugging you i just don't get it

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asked Jan 11, 2016 46.9k views

2 votes

Which sets of numbers are closed under subtraction?

Choose all answers that are correct.

A.
odd natural numbers

B.
rational numbers

C.
{0, 1}

D.
{0, 1, 2}

sorry for bugging you i just don't get it

Mathematics
middle-school

EFrank asked

by EFrank

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1 Answer

5 votes

I'm pretty sure it is only b because when you subtract two rational numbers, you always get back a rational number.

Woodster answered Jan 16, 2016

by Woodster

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