Question

How do you write the rule for the nth term given `1/3,2/3,3/3,4/3,5/3,...`?

Answer 1

It would obviously be `n/3`

Explanation:

Note : often there is comfusion between `n`th term and `u_n` (or whatever letter in stead of `u`)
`n`th means that the first number is the first in the row i.e. the first term, and so on.
With the `u_n`-notation the first term is usually called `u_0`, so the `n`th term is then `u_(n-1)`