Fig. 1 and Fig. 2 are the addition and multiplication tables respectively in modulo 5. Use these tables to solve the equation (n (oplus 4))
-
A.
1 -
B.
2 -
C.
3 -
D.
4
Correct Answer: Option C
Explanation
(n (oplus) 4) (oplus) 3 = 0 (mod 5)
(3 (oplus) 4) (oplus) 3
12 (oplus) 3 = 15 (mod 5)
(5 x 3 + 0) = 0 (mod 5)