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

---
id: 5e9a093a74c4063ca6f7c155
challengeType: 11
videoId: eqSVcJbaPdk
---

# --description--

More resources:

\- [Notebook](https://notebooks.ai/rmotr-curriculum/freecodecamp-intro-to-numpy-6c285b74)

# --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

# --hints--


# --solutions--