what is the difference between multiArray.length and multiArray

1. https://www.youtube.com/watch?v=eNPX2pTiaHI based on the video above: what is the difference between multiArray.length and multiArray[I].length in the multi-dimensional topic covered in the video

1. https://www.youtube.com/watch?v=eNPX2pTiaHI

based on the video above:  what is the difference between multiArray.length  and multiArray[I].length in the multi-dimensional topic covered in the video?

2. https://www.youtube.com/watch?v=1KTArjYPMEo

a) watch the video and summarize it on your own words in one paragraph

b) ask one question from the video?

3. watch this video: https://www.youtube.com/watch?time_continue=5&v=jYXpJQy8sUU&feature=emb_logo

ask one arrays question based on the above video

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