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jupytext:
  text_representation:
    extension: .md
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```{code-cell} ipython3
:tags: [remove-cell]

%matplotlib inline
```


# Exercise: Creating arrays using zeros and ones 2

Using a single line of code, create a 15x3 matrix that contains only ones.

```{code-cell} ipython3
:tags: [hide-cell]
import numpy as np

np.ones((15, 3))
```