How can we rename a notebook in Google Colab?

In Google Colab, you can rename a notebook by following these steps:

1. In Google Colab, select the notebook you want to rename.

2. Select the file name located in the notebook's upper-left corner. It will be given the name "UntitledX.ipynb" by default, where X is a number.

3. Various options will be displayed in a dropdown menu. Pick "Rename" from the menu's options.

4. After choosing "Rename," a dialogue box where you can change the name of your notebook will open.

5. Type the name you want for your notebook in the box provided and hit Enter or click the "OK" button.

6. The new name you provided will be applied to the notebook.

Please be aware that changing the notebook's name only affects the Google Colab interface; downloading or saving the notebook externally won't be affected.