Question: Write a grammar that describes arithmetic expressions in prefix notation, where possible operators are + and *, and possible operands are numbers or identifiers. You

Write a grammar that describes arithmetic expressions in prefix notation, where possible operators are + and *, and possible operands are numbers or identifiers. You do not need to specify the internal structure of numbers and identifiers - assume that they are returned by the scanner as terminal symbols nr and id. Also assume that each operator takes extactly two operands. Is your grammar ambiguous? Why?

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