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

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---
id: 5e9a093a74c4063ca6f7c155
challengeType: 11
videoId: eqSVcJbaPdk
---
## Description
<section id='description'>
More resources:
- <a href="https://notebooks.ai/rmotr-curriculum/freecodecamp-intro-to-numpy-6c285b74" target='_blank'>Notebook</a>
</section>
## Tests
<section id='tests'>
````yml
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]
```
solution: 2
````
</section>