A. 36
B. 63
C. 47
D. 81

Correct Answer: Option D

D. 81

SEE ALSO  A binary operation ⊗ is defined by m⊗n=mn+m−n on the set of real numbers, for all m, n ∈ R. Find the value of 3 ⊗ (2 ⊗ 4).

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