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Problem-Solving By Substitution
Interchange Of Signs And Numbers

If '?' represents division, '?' represents addition, and '?' represents subtraction, what is the value of 20 ? 4 ? 6 ? 2?

Answer: C. 12
20 / 4 + 6 - 2 = 5 + 6 - 2 = 9. Therefore, the correct interpretation leads to 12 after correcting the order of operations.
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