Discussion
The prefix form of (A - B / C) * (A / K - L) is :
Answer: C
The prefix form is * - A / B C - / A K L.
Convert each part, giving / priority over -:
- A - B / C: B / C becomes / B C, so the whole is - A / B C.
- A / K - L: A / K becomes / A K, so the whole is - / A K L.
The two bracketed parts are multiplied, so * goes in front: * - A / B C - / A K L.
The option A B C A K L * - / - / is a postfix-style string with the operators gathered at the end, and the other two options place the operators in an order that does not reproduce the expression when read back.
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