Q103: Equivalent prefix expression

Question #103: What is the equivalent prefix expression for ((A + B) * (F + G))?

Options:

1. +*AB+FG
2. *++ABFG
3. *AB+FG+
4. *+AB+FG

Solution: * should be performed as the last operation and both + should be performed before multiplication. Hence, correct option is the 4th one.