1_numbers_operators_comments.ipynb

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    "# Numerical Operators\n",
    "\n",
    "- prepared by [Katarina Nastou](https://www.cpr.ku.dk/staff/?pure=en/persons/672471)\n",
    "\n",
    "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/pythontsunami/teaching/blob/intro/1_numbers_operators_comments.ipynb)"
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    "## Colab \n",
    "\n",
    "In this course we use [Google Colab](https://colab.research.google.com/) to execute notebooks. Notebooks are documents allowing\n",
    "the combination of text, code and the output of code. Colab offers an extended set of\n",
    "pre-installed tools. See the [tutorial series](https://www.youtube.com/playlist?list=PLQY2H8rRoyvyK5aEDAI3wUUqC_F0oEroL)."
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    "### Saving the notebook in Drive\n",
    "Save a copy in your drive if you want to save your changes: `File` -> `Save a copy in Drive`\n",
    "\n",
    "\n",
    "![Save Colab Notebook in Google Drive](figures/colab_save_in_drive.png)\n",
    "\n",
    "or \n",
    "\n",
    "![Save Colab Notebook in Google Drive](figures/colab_save_in_drive_2.png)\n"
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    "**Table of Contents in Colab**\n",
    "> Allows easier navigation\n",
    "\n",
    "![Table of content in Colab](figures/colab_toc.png)"
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    "## Objectives\n",
    "- understand differences between `int`s and `float`s\n",
    "- work with simple math operators\n",
    "- add comments to your code"
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    "## Numbers\n",
    "Two main types of numbers:\n",
    "- Integers: `56, 3, -90`\n",
    "- Floating Points: `5.666, 0.0, -8.9`"
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    "## Operators \n",
    "- addition: `+`\n",
    "- subtraction: `-`\n",
    "- multiplication: `*`\n",
    "- division: `/`\n",
    "- exponentiation, power: `**`\n",
    "- modulo: `%`\n",
    "- integer division: `//`  (what does it return?)"
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    "# playground"
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    "### Qestions: Ints and Floats\n",
    "- Question 1: Which of the following numbers is NOT a float? \n",
    "        (a) 0 \n",
    "        (b) 2.3 \n",
    "        (c) 23.0 \n",
    "        (d) -23.0 \n",
    "        (e) 0.0"
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    "- Question 2: What type does the following expression result in? \n",
    "\n",
    "```python\n",
    "3.0 + 5\n",
    "```"
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    "### Operators 1\n",
    "- Question 3: How can we add parenthesis to the following expression to make it equal 100? \n",
    "```python\n",
    "1 + 9 * 10\n",
    "```\n",
    "       \n",
    "- Question 4: What is the result of the following expression?\n",
    "```python\n",
    "3 + 14 * 2 + 4 * 5\n",
    "```\n",
    "- Question 5: What is the result of the following expression\n",
    "```python\n",
    "5 * 9 / 4 ** 3 - 6 * 7\n",
    "```"
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    "### Comments\n",
    "- Question 6: What is the result of running this code? \n",
    "\n",
    "```python\n",
    "15 / 3 * 2 # + 1 \n",
    "```"
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    "### Questions: Operators 2 \n",
    "\n",
    "- Question 7: Which of the following result in integers in Python? \n",
    "        (a) 8 / 2\n",
    "        (b) 3 // 2 \n",
    "        (c) 4.5 * 2"
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    "- Question 8: What is the result of `18 // 3` ?"
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    "- Question 9: What is the result of `121 % 7` ?"
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