If '?' means addition, '?' means subtraction, and '?' means multiplication, what is the value of 6 ?

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Problem-Solving By Substitution

Interchange Of Signs And Numbers

A. 20

B. 10

C. 8

D. 12

E. None of the above

Answer: A. 20

6 + 2 - 3 * 4 = 8 - 12 = -4, but the operations must be performed in the correct order: 6 + 2 = 8, 8 - 3 = 5, 5 * 4 = 20.

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