Why aren't all odd numbers divisible by 3?

Answer 1

Because not all odd numbers are multiples of 3 - I have shown you below that this is the case and you can see some multiples of 3 are even and some are odd and you can also see that there are even and odd numbers BETWEEN the multiples of 3.

1 (odd)

2 (even)

1*3 =3 (odd)

4 (even)

5 (odd)

2*3 = 6 (even)

7 (odd)

8 (even)

3*3 = 9 (odd)

10 (even)

11 (odd)

4*3 = 12 (even)