A set of numbers has the property that for any number in the set,
and
are also in the set. If −3 is in the set, which of the following must also be in the set?
I. −27
II. 27
III. 81
A set of numbers has the property that for any number in the set,
and
are also in the set. If −3 is in the set, which of the following must also be in the set?
I. −27
II. 27
III. 81