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E-STAR - Student
E-Lecture - Addition (⊕) and multiplication (⊕) of tables in a given modulo

The signs (⊕) and (⊗) are used to differentiate from ordinary addition and multiplication respectively. For example, in modulo 5, we can evaluate 7 ⊕ 12 = 19 = 4 (mod 5) = 4 and 7 ⊗ 12 = 84 = 4 (mod 5) = 4.

We use the set of numbers {0, 1, 2, 3, 4} to draw the table for arithmetic modulo 5.

For modulo 8, we use the set of numbers {0, 1, 2, 3, 4, 5, 6, 7} to draw the table.