# Lingustics Problem about Breton Number System

Historical Background on Breton

Breton is a language spoken in Brittany, France. It is related to both English and French. Here are some numbers and rules:

Some Background on Breton number system

Unan = 1, daou = 2, tri = 3, pevar = 4,pemp = 5, c'hwec'h = 6, seizh = 7, nav = 9, -zek is teen (like fourteen, fifteen, etc.), ugent = 20, like in French 80 is quatre-vignt (quatre = 4, vignt = 20, 4 x 20 = 80) something in Breton like tri-ugent would be 3 x 20 = 60, 50 in Breton is hanter kant --> hanter = 1/2, kant = 100.

The Question

"Triwec'h" is an irregular number in Breton, like "eleven" or "quinze". It's value is between 10 and 20. I looked at the answer and it says "triwec'h" is 18. My question is ** how ** you would figure out the value of "triwec'h" with only the background provided in this post?

My Progress(not much)

I think an important hint to solving this problem is that c'hwec'h = 6 since they both have c'h. The "tri" in "triwec'h" is probably 3. Maybe we is also 3, and c'h is 2 instead of daou? So like 3 x 3 x 2 =18, but perhaps for c'hwec'h it is simply 2*3 = 6 because there are two c'h so it is redundant? But that seems unlikely because a more efficient system would be to simply do c'hwe for 6.

Sorry if this seems like a lot to read but I'd appreciate if someone could explain how to do this problem. Here is the link to the whole question:https://nacloweb.org/resources/problems/2020/N2020-E.pdf. The problem is #3. Thank you!

• And what is your question here? Jul 11, 2022 at 14:36
• How would you deduce what triwec'h means based on the rules and vocabulary of the Brenton number system? Jul 11, 2022 at 15:10
• @MeltedStatementRecognizing I think the body of the question is still unclear. Adding the actual question at the end in bold would make it clearer Jul 11, 2022 at 15:25
• thanks. That does help. I would also note that the language is Breton, not Brenton Jul 11, 2022 at 15:38
• Interestingly in the other brythonic languages we have for 'eighteen': Welsh deunaw (2*9) and Cornish etek (< eth-tek, '8+10'). ALL three moder brythonic languages have different forms for '18'. Jul 11, 2022 at 18:06