Question

Which is a counterexample to the conjecture?

Any number that is divisible by 3 is divisible by 9.

A.
69

B.
18

C.
63

D.
27

Answer 1

@jane11509

Answer 2

let's consider some multiples of 3
and you can point to me if they are also divisible by 9 or not
and we are looking for an example of the not case
3(1)=3
3(2)=6
3(3)=9
3(4)=12
3(5)=15
3(6)=18
3(7)=21
this is just the first 7 positive multiples of 3

Answer 3

are all of these divisible by 9?

Answer 4

is 9 a factor of 3?
is 9 a factor of 6?
is 9 a factor of 9?
is 9 a factor of 12?
is 9 a factor of 15?
is 9 a factor of 18?
is 9 a factor of 21?

Answer 5

answer

Answer 6

@freckles

Answer 7

yes I'm waiting on you to answer my question

Answer 8

yes that is divisable

Answer 9

so you are saying the answer is yes to all of my questions?

Answer 10

9 is a factor of 3?
and so on...

Answer 11

18

Answer 12

I think you should go back over my questions

Answer 13

do you know what factor means?

Answer 14

if you are saying 9 is a factor of 3, then you are saying 9 times some integer=3.

Answer 15

yes and I am asking for help

Answer 16

so may I ask what you think that integer is?

Answer 17

9*what integer=3

Answer 18

I forgot

Answer 19

what is an integer?

Answer 20

yeah

Answer 21

that doesn't answer my question