In algebra, what is the difference between rule and roster?

In algebra, the definition of rule is a description identifying the members of a set. The definition of a roster is how you specify a set when listing all members of a set. I kind of get the gist of this, but do you think you could explain it in greater detail and/or give examples? I’m kind of confused on how to identify this (aka, if I take a quiz over it sometime. Which may be in the near future. Like tomorrow.) Help is appreciated!

In roster form, you actually list all the elements.
A = {a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z} is in roster form.

The rule for this set is that A is the letters of the alphabet.

One Response to “In algebra, what is the difference between rule and roster?”

  1. MsMath Says:

    In roster form, you actually list all the elements.
    A = {a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z} is in roster form.

    The rule for this set is that A is the letters of the alphabet.
    References :

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