Question

Show that any positive odd integer is of the form 6q+1, 6q+3 or 6q+5, where q is any positive integer

Answer 1

The odd numbers 1,3, and 5 cannot be obtained using any of the above expressions with q a positive integer.
Only if q = 0, and q is not a positive integer.

Answer 2

Show that any positive odd integer is of the form 6q+1,or 6q+3 or 6q+3 or 6q+5 where is some integer