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    "# Using JupyterLab (Average of Three)\n",
    "\n",
    "1. In this Jupyter notebook, implement the function `average_of_three(a, b, c)` such that it returns the average value of three numbers `a`, `b` and `c`. The signature of the function is:\n",
    "\n",
    "```python\n",
    "def average_of_three(a, b, c):\n",
    "    \"\"\"Return the average of three numbers a, b, and c.\"\"\"\n",
    "```\n",
    "\n",
    "2. In the same or another cell of the notebook, print the output of calling the function with the values `a = 3`, `b = 4`, and `c = 8`. Upload a screenshot of the result to the `Project Files/screenshot/` directory **on CodeExpert**.\n",
    "\n",
    "3. In the file `feedback.md` **on CodeExpert**, please describe any difficulties that you experienced when installing Jupyter Lab and the other Python packages. Any other related comments are welcome."
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