Question

Which sets of numbers are closed under multiplication?

Choose all answers that are correct.

A.
whole numbers

B.
natural numbers

C.
negative integers

D.
integers

Answer 1

Probabaly Intergers? i dont really know

Answer 2

@triciaal

Answer 3

lol exactly

Answer 4

A, B, D

Answer 5

(-2) * (-2) = +4 , not a negative integer

Answer 6

checking

Answer 7

a and c I think

Answer 8

"closure property The product of any two real numbers is a unique real number"

Answer 9

Thank you Perl, im going to use your answer. Let me see if it is right, and i will give you the medals.

Answer 10

a set has closure under an operation if and only if the result of the operation on any two elements of the set is also in the set

Answer 11

Every real number is either positive, negative or zero

Answer 12

@triciaal the important part is that the product is also a real number

question, are real numbers closed under division?

Answer 13

are the set of real numbers closed under division?

Answer 14

@triciaal

Answer 15

@perl wait
for the above I would put all

Answer 16

ok take your time, we can come back to this

Answer 17

@triciaal
the correct answer is A, B, D
what is wrong with C?

Answer 18

@perl
is that a trick question since you already showed what is wrong with C?

Answer 19

acd I think