waecmaths question:
In what modulus is it true that 9 + 8 = 5
Option A:
mod 10
Option B:
mod 11
Option C:
mod 12
Option D:
mod 13
waecmaths solution:
Add 9 + 8 gives 17, in mod 12, the remainder when 17 is divided by 12 is 5. so mod 12 is the correct option
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