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How many strings of length at most 4 are derived by the grammar given below? S→aSd|A|B|C A→aAc|C B→bBd|C C→bCc|λ

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

How many strings of length at most 4 are derived by the grammar given below?

S→aSd|A|B|C

A→aAc|C

B→bBd|C

C→bCc|λ

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