Task: Program Execution
Input (English): Set1: '{2, 3, 4, 5, 6, 10, 11, 12, 13, 17}', Set2: '{1, 2, 4, 5, 6, 8, 11, 14, 17, 18}'. How many elements are there in the intersection of Set1 and Set2 ?
Output (English): 6