Answer:
1
Step-by-step explanation:
You can do this two ways:
(13 -6) mod 6 = 7 mod 6 = 1
(13 -6) mod 6 = (13 mod 6) -(6 mod 6) = 1 - 0 = 1
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"mod 6" means you are interested in the remainder after division by 6. For some number n, it can be computed as ...
n mod 6 = n - 6×Floor(n/6)
