
## Section1Arithmetic

A simple, but functional example to begin with. If you are just learning how to add, you can test yourself here.

That was a simple problem. Let's move on.

If you are familiar with WeBWorK, then it may be a surprise to you to be interacting with a WeBWorK problem this way, without having logged in to WeBWorK.

###### Exercise1.2Declaring a Problem Seed

You can also declare a seed to specify a version of any problem that has randomization. Here is the same problem, but with a seed specified.

###### Exercise1.6No Randomization

This problem has no randomization at all, not even if it were exported to be part of a problem set on a WeBWorK server. As such, it really doesn't need any lines of Perl code in its setup, so you have the option of skipping that part of the authoring process.

For more about problems that do not require any randomization, see the PTX Author Guide.