Exercise for reference:

letters = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"]

Answer:

letters = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j"]
print(letters[-2])

Explanation:

Besides the left-to-rightpositive indexing system that starts from zero, sequence data types such as lists also have a second indexing system that starts from -1 and decreases by one from right to left.