2021 Spring LMT Division A Problem 24
Source:
January 22, 2022
combinatorics
Problem Statement
A Haiku is a Japanese poem of seventeen syllables, in three lines of five, seven, and five.Using the four words
“Hi”, “hey”, “hello”, and “haiku”,
How many haikus
Can somebody make?
(Repetition is allowed,
Order does matter.)Proposed by Jeff Lin