TASK DEFINITION: In this task, you are given an input i,A where i is an integer and A is an array. You need to find every ith element of A starting with the 1st element.
PROBLEM: 5, ['721', 'O', 'W', 'N', 'v', 'D', 'B', '7371', '2311', '4289', 'U', '4843', '1089', 'z', '469', '7917', '811', '1929', '911', 'x', '5805', 'B', '2889', 'D', '8577', '5263', 'S', 'w', 'e', '2479', '7489', '4813', '9983', '2583', '8589', '287', '8719', 'l', '1135', 'w', '2525', 'm', 'i', '3721', 'x', '2105', '7935', '4845', '8367', '6349']

SOLUTION: 721, D, U, 7917, 5805, 5263, 7489, 287, 2525, 2105

PROBLEM: 16, ['5457', 'L', 'E', 'g', 'x', 'X', '1305', '9419', '3489', 'E', '6629', '1699', 'F', '2543', '3505', 'h', '5871', 'x', '513', 'N', 'O', 'K', 'X', 'D', 'C', '4545', '6253', 'e', '3591', '9053', 'h', '7775', 'P', '6649', '9317', '1127', 'h', 'N', 'n']

SOLUTION: 5457, 5871, P

PROBLEM: 18, ['O', 'J', '4869', 'z', '3237', '7247', '119', 'G', '6449', '5231', 's', '9071', 'v', '9973', '4039', '6861', 'r', '6145', 'j', 'w', '9993', 'L', 'K', '7589', '4997', 'c', 'G', '879', 'o', 'Q', 'k', '4303', 'G', 'c', 'J', 'Q', 'k', 'y', '3603']

SOLUTION:
O, j, k