Context Free Grammar

Question 1

What is a tuple?

Answer 1

Tuples are used to store multiple items in a single variable. A tuple is a collection which is ordered and unchangeable. They are written with round brackets like so..

thistuple = (“apple”, “banana”, “cherry”)
print(thistuple)

Question 2

What is a context-free grammar?

Answer 2

Context-free grammar is a 4-tuple (V,Σ, R, S) where where V is a set of variables, Σ is an alphabet of terminal symbols, R is a set of rules, and S is a start symbol.