If ? represents addition, ? represents subtraction, ? represents multiplication, and ? represents di

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Problem-Solving By Substitution

Interchange Of Signs And Numbers

If ? represents addition, ? represents subtraction, ? represents multiplication, and ? represents division, what is the value of 8 ? 4 ? 2 ? 3 ? 2?

A. 10

B. 14

C. 20

D. 12

E. None of the above

Answer: D. 12

Following BODMAS, first perform multiplication and division: 2 ? 3 = 6, then 6 ? 2 = 3. Now substitute back: 8 ? 4 = 12, then 12 ? 3 = 9. Thus, the final answer is 12.

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