freeCodeCamp/curriculum/challenges/english/08-data-analysis-with-python/data-analysis-with-python-course/numpy-operations.md

---
id: 5e9a093a74c4063ca6f7c155
title: Numpy Operations
challengeType: 11
videoId: eqSVcJbaPdk
bilibiliIds:
  aid: 378057123
  bvid: BV13f4y1w7od
  cid: 409012507
dashedName: numpy-operations
---

# --description--

*Instead of using notebooks.ai like it shows in the video, you can use Google Colab instead.*

More resources:

-  <a href="https://github.com/ine-rmotr-curriculum/freecodecamp-intro-to-numpy" target="_blank" rel="noopener noreferrer nofollow">Notebooks on GitHub</a>
-  <a href="https://colab.research.google.com/github/googlecolab/colabtools/blob/master/notebooks/colab-github-demo.ipynb" target="_blank" rel="noopener noreferrer nofollow">How to open Notebooks from GitHub using Google Colab.</a>

# --question--

## --text--

What is the value of `a` after you run the following code?

```py
a = np.arange(5)
a + 20
```

## --answers--

```python
[20, 21, 22, 24, 24]
```

---

```python
[0, 1, 2, 3, 4]
```

---

```python
[25, 26, 27, 28, 29]
```

## --video-solution--

2