# Doubts

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An umambiguous grammar has same right most and left most derivation>??

True or false.?

reopened
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true
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Unambigiuos grammar dont have same LMD and RMD rt???
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ohh...I thought about parse tree. SOrry. Its false.

If any grammar has more than 1 LMD or more than 1 RMD or more than 1 parse tree that will be an ambiuous grammar.SO if grammar is unabiguous it must have only 1 LMD or 1RMD or 1 parse tree.

So here every umbiguous grammar has only 1 LMD and 1 RMD means both must be equal because if it is not it will be ambiguous.

TRUE
ambiguous means only one parse tree so it means  that left recursive most derivative and right most derivation will be same

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