Prefix expression can be evaluated _________(a) from right to left(b) from left to right(c) from the exact middle(d) from second right elementThis question was posed to me in an interview for job.This is a very interesting question from Trees topic in section Trees of Discrete Mathematics

Prefix expression can be evaluated _________(a) from right to left(b)

1.	Prefix expression can be evaluated _________(a) from right to left(b) from left to right(c) from the exact middle(d) from second right elementThis question was posed to me in an interview for job.This is a very interesting question from Trees topic in section Trees of Discrete Mathematics
Answer» Correct choice is (B) from left to right The explanation is: Expressions are usually EVALUATED from left to right manner. Prefix expressions follow the normal RULE i.e from left to right. POSTFIX expressions can be evaluated from right to left.

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