In what modulus is it true that 9 + 8 = 5?
MATHEMATICS
WAEC 2014
In what modulus is it true that 9 + 8 = 5?
- A. mod 10
- B. mod 11
- C. mod 12
- D. mod 13
Correct Answer: C. mod 12
Explanation
9 + 8 = 17
17 + mod 12 = 1 rem 5
it is mod 12
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