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What is the residue modulo 16 of the sum of the modulo 16 inverses of the first 4 positive odd integers? Express your answer as an integer from 0 to 15, inclusive.

 Dec 10, 2020
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If I understand your question:

 

"The sum of modulo 16 inverses of the first 4 positive odd integers" is:[1, 3, 5, 7]^ -1 mod 16 =[1 + 11 + 13 + 7] ==32

32 mod 16==0

 Dec 10, 2020

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