Question

will fan and medal
For which operations is the set {–1, 1} closed?

Choose all answers that are correct.

A.
addition

B.
subtraction

C.
multiplication

D.
division

Answer 1

I say D

Answer 2

Not really sure though

Answer 3

probably b

Answer 4

i can help you just wait

Answer 5

it's B.subtraction

Answer 6

thanks im stumped with this subject

Answer 7

np

Answer 8

lol i said b already :}

Answer 9

:b

Answer 10

I said B but I second guess my self