TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.
PROBLEM: 4, 13, ['9747', 'g', 'z', 'I', 'a', '8619', '6035', '4209', 'M', '5157', 'J', '2399', '3935', 'e', '531', '9759', '4253', '7311', 'G', '4751', '3589']

SOLUTION: 53939932J7515M902453069168aI

PROBLEM: 6, 11, ['B', 'j', '911', 'A', '7195', 'm', '7177', 'X', '2015', 't', 'P', 'x', 'F']

SOLUTION: Pt5102X7717m

PROBLEM: 3, 24, ['2941', 'c', '3419', 'a', '8733', 'e', 'z', 'V', 'v', 'o', '7053', '1393', '23', 'T', '9391', '5687', '7825', '819', 'N', '9201', '6119', '4661', '9219', '4957', 'k', '2063']

SOLUTION:
75949129166491161029N918528778651939T3239313507ovVze3378a9143