TASK DEFINITION: In this task, you are given inputs i and A, where i is an integer and A is a list. You need to list all the elements of A preceding the last i elements. i will always have a value less than the length of A.
PROBLEM: 2, ['7289', '5445', 'I', 'M', 'A', '523', '3831', 'd', 'k', 'H', 'B', 'f', 'J', '3723', '5911', 'n', 'P', '1647', 'F', '4287', '5909', '2037', 'u', '3593', 'x', '7863']

SOLUTION: 7289, 5445, I, M, A, 523, 3831, d, k, H, B, f, J, 3723, 5911, n, P, 1647, F, 4287, 5909, 2037, u, 3593

PROBLEM: 1, ['t', '8485']

SOLUTION: t

PROBLEM: 3, ['9523', '1411', 'r', '3037', '1873', '1517', '5407']

SOLUTION:
9523, 1411, r, 3037