Question
Compute the subtraction table of the integers mod 5 . How does it compare with the addition table computed in Exercise 3 ?
Step 1
We will subtract the numbers in the top row from the numbers in the left column, and then take the result modulo 5. ``` | 0 1 2 3 4 --+-------------- 0 | 0 4 3 2 1 1 | 1 0 4 3 2 2 | 2 1 0 4 3 3 | 3 2 1 0 4 4 | 4 3 2 1 0 ``` Now let's Show more…
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