2019
Mathematics
67ca00ce0c643c71d77dee1f
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).
A.
6
B.
25
C.
15
D.
18
Correct Answer: 15
Explanation
m ⊗ n = mn + m − n 3 ⊗ (2 ⊗ 4) 2 ⊗ 4 = 2(4) + 2 - 4 = 6 3 otimes 6 = 3(6) + 3 - 6 = 15
m ⊗ n = mn + m − n 3 ⊗ (2 ⊗ 4) 2 ⊗ 4 = 2(4) + 2 - 4 = 6 3 otimes 6 = 3(6) + 3 - 6 = 15THIS WEEK's
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