Question

Which sets of numbers are closed under subtraction?

Choose all answers that are correct.

A.
whole numbers

B.
negative integers

C.
integers

D.
rational numbers

Answer 1

all of the above i think

Answer 2

I need to actually know

Answer 3

why

Answer 4

I dont think whole numbers are closed under subtraction because you could have something like 5 - (10) = -5

for something to be closed under an operation, you cant get a solution that belongs to another set. -5 is outside the set of whole numbers.

Answer 5

so your saying that everything except whole numbers is?

Answer 6

yes that is what blurbendy is saying

Answer 7

yup.