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---
id: 5e9a093a74c4063ca6f7c156
title: Numpy Boolean Arrays
challengeType: 11
videoId: N1ttsMmcVMM
2021-01-13 02:31:00 +00:00
dashedName: numpy-boolean-arrays
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---
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# --description--
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*Instead of using notebooks.ai like it shows in the video, you can use Google Colab instead.*
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More resources:
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- [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 will the following code print out?
```py
a = np.arange(5)
print(a < = 3)
```
## --answers--
```python
[False, False, False, False, True]
```
---
```python
[5]
```
---
```python
[0, 1, 2, 3]
```
---
```python
[True, True, True, True, False]
```
## --video-solution--
4
