Which of the following is/are applications of Catalan numbers? – McqOptions

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1.	Which of the following is/are applications of Catalan numbers?
A.	Counting the number of Dyck words
B.	Counting the number of expressions containing n pairs of parenthesis
C.	Counting the number of ways in which a convex polygon can be cut into triangles by connecting vertices with straight lines
D.	All of the mentioned
Answer» E.

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