WAEC - Mathematics (2014 - No. 36) | ExamPlay

WAEC - Mathematics (2014 - No. 36)

In what modulus is it true that 9 + 8 = 5?

mod 10

mod 11

mod 12

mod 13

Vysvětlení

9 + 8 = 17

17 + mod 12 = 1 rem 5

it is mod 12

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