For which operations is the set {–1, 0, 1} closed?

Choose all answers that are correct.

A.
addition

B.
division

C.
multiplication

D.
subtraction

Question

For which operations is the set {–1, 0, 1} closed?
 
Choose all answers that are correct.
 
 A.
addition
 
 B.
division
 
 C.
multiplication
 
 D.
subtraction

thebadyboy · Answer

@hhelpplzzzz @Joel_the_boss @iGreen. @YOLO_KING

yolo_king · Answer

1-(-1)=?
1/0=?
As it turns out for all four operations only one is not included int he equation that we made and that is Multiplication. So Multiplication is your answer.

yolo_king · Answer

Multiplication is the answer. 

Not division: 1/0 is not a member of the set. 

Not addition: 1 + 1 is not a member of the set. 

Not subtraction: 0 - 1 is not a member of the set.

yolo_king · Answer

There for C is your answer.