# Define a function triple(n) with the docstring 'Triple the input value.' that returns n * 3

Canonical URL: <https://datadriven.io/problems/define-a-function-triplen-with-the-docstring-triple-the-i-f9afb493>

Domain: Python · Difficulty: medium

## Problem

Define a function triple(n) with the docstring 'Triple the input value.' that returns n * 3. Print triple(5) and triple(10).

## Related

- [All practice problems](https://datadriven.io/problems)
- [Mock interview mode](https://datadriven.io/interview/define-a-function-triplen-with-the-docstring-triple-the-i-f9afb493)
- [Python Interview Questions](https://datadriven.io/python-interview-questions)
- [Data Engineering Interview Prep Guide](https://datadriven.io/data-engineer-interview-prep)
- [Daily Challenge](https://datadriven.io/daily)

---

Source: DataDriven (https://datadriven.io). 100% free data engineering interview prep. Live code execution against Postgres 16, Python 3.11, and Spark sandboxes. No paywall, no premium tier, no signup gate.