Question

Which equations show that the set of whole numbers is closed under multiplication?

Choose all answers that are correct.

A.
–1 • –1 = 1

B.
0 • –1 = 0

C.
0 • 2 = 0

D.
2 • 1 = 2

Answer 1

@iGreen

Answer 2

can you help

Answer 3

@midhun.madhu1987 @SithsAndGiggles

Answer 4

@mathstudent55

Answer 5

To show the set of whole number is closed under multiplication, you need to pick examples of multiplications done to whole numbers whose results are whole numbers.

Answer 6

The first thing you need to know is what the set of whole number is.
Do you know?

Answer 7

Sorry was making my self lunch so sorry @mathstudent55

Answer 8

@patrickthestar @Mason99

Answer 9

@midhun.madhu1987

Answer 10

@aaronq

Answer 11

ikram002p

Answer 12

@ikram002p

Answer 13

@omg1help @aaronq @agent0smith @Samus_Aran @mehsummer @mathgeek27

Answer 14

@tennisdude210

Answer 15

what is the set of whole numbers ?

Answer 16

this question is multiple Coice I dont know

Answer 17

how many can you choose?

Answer 18

As maNYAS MANY THAT i WANT

Answer 19

ok the set of whole numbers is
1,2,3,4,....
and closed under multiplications means
if a is a whole number and b is a whole number
then
a.b is also a whole number , chose the option that only have whole numbers ^_^

Answer 20

SO IT WOULD BE OPTION C AND D

Answer 21

bECAUSE IT HAS TO BE 2 OR MORE

Answer 22

It would be C and D because it is the only problem in which a whole number is the result of the multiplication.

Answer 23

yes ur correct C and D
i made a typo whole numbers starts from 0 not 1 :؛

Answer 24

Thanks tennis dude

Answer 25

And ikram

Answer 26

can you help me with some more

Answer 27

@ikram002p

Answer 28

post and i'll see but i dont promise :P

Answer 29

Ok thank you here they are

Answer 30

Which sets of numbers are closed under addition?

Choose all answers that are correct.

A.
{0, 2, 5, 8}

B.
even integers

C.
rational numbers

D.
{0}

Answer 31

Multiple choice

Answer 32

A set closed under addition means that if you take any two numbers (you can use the same number twice) from the set and you add them together, the addition is also part of the set.
Let's look at choice D. The set is {0}
Add 0 + 0. The solution is 0.
Both zeros that you added together and the zero that is the addition are all part of the set {0}, so this set is closed under addition.

Answer 33

Now try the same method for choices A, B, and C.
Use several combinations of two numbers from each set to see if the set is closed under addition.