# A/B/n tests {% embed url="" %} An A/B/n test is a `Test` [experiment](/concepts/experiments.md) with a single dimension with two or more arms. To create an A/B/n test, insert an `Experiment` expression in your flag logic. Create a new experiment from the dropdown. By default, it will have two arms called `Test` and `Control` each allocated 50% of traffic. In your flag logic, enable your feature for the `Test` arm and disable it for the `Control` arm. To change the number of arms or their traffic percentages, navigate to the experiment page from the dropdown. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hypertune.com/concepts/a-b-n-tests.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.