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

---
id: 5e9a093a74c4063ca6f7c155
title: Numpy Operations
challengeType: 11
videoId: eqSVcJbaPdk
dashedName: numpy-operations
---

# --description--

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

More resources:

-   [Notebooks on GitHub](https://github.com/ine-rmotr-curriculum/freecodecamp-intro-to-numpy)
-   [How to open Notebooks from GitHub using Google Colab.](https://colab.research.google.com/github/googlecolab/colabtools/blob/master/notebooks/colab-github-demo.ipynb)

# --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