A binary operation ⊗ defined on the set of integers is such that m ⊗
PHYSICS
JAMB 2009
A binary operation ⊗ defined on the set of integers is such that m ⊗ n = m + n + mn for all integers m and n. Find the inverse of -5 under this operation, if the identity element is 0
- A) −5/4
- B) −5/6
- C) 0
- D) 5
Correct Answer: D) 5
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