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1. Compute \(12121_3 \cdot 1222_3\) in base 3.

 

 

 

Second question deleted.  One question per post.   Melody.

 

Also the second was almost the same as the first.  Learn from the first if you get an answer and apply it yourself to the second.

 Oct 8, 2020
edited by Melody  Oct 8, 2020
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I'd convert them both to base 10, do the multiplication and then convert back.

 Oct 8, 2020

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