The binary operation on the set of real numbers is defined by m*n = mn/2...
MATHEMATICS
JAMB 2012
The binary operation on the set of real numbers is defined by m*n = mn/2 for all m, n ∈ R. If the identity element is 2, find the inverse of -5
- A. −4/5
- B. −2/5
- C. 4
- D. 5
Correct Answer: A. −4/5
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