Fsc Part 1 Mathematics (Complete Solution)

Q4
Prepare a table of addition of the elements of the set of residue classes modulo 4.

Solution:

+ 0 1 2 3
0 0 2 3
1 1 2 3 0
2 2 3 0 1
3 3 0 1 2

Here 2+2=0 (mod 4), 2+3=1 (mod 4) etc.

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