Question

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}

Answer 1

D.
2 -1 = 1 and 1 is in the {}
2 - 0 = 0, 0 is in the {}
1 -1 = 0 which is in {}
C is also correct
I think B is correct, I'm not 100% sure for that..

Answer 2

Thank you Vianne I've been needing help 4 like 2 hours nobody was nice enough except you..... Thank you so very much

Answer 3

1-2=-1

Answer 4

No Problem :)

Answer 5

odd-odd =even

example 5-3=2

Answer 6

0-1=-1

Answer 7

so A,C,D are not closed under subtraction