TASK DEFINITION: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant 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.
PROBLEM: 7, 19, ['6151', 'l', 'J', 'E', '9937', 'B', '7501', '6221', 'K', '121', '7373', 'f', '2067', 'l', 'k', '3715', 'X', 'K', '7423']

SOLUTION: 75016221K1217373f2067lk3715XK7423

PROBLEM: 3, 6, ['A', '3425', '3635', '9017', '8815', 'I', '1741', 'S', '483', 'U']

SOLUTION: 363590178815I

PROBLEM: 8, 11, ['q', '2213', 'j', '2521', 'K', 'g', 'G', '241', '4129', 'f', '709', 'S', 'S']

SOLUTION:
2414129f709