The frequent items are::
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]

The frequent pair of items are::
{(1, 2): 50, (1, 3): 33, (1, 4): 25, (1, 5): 20, (1, 6): 16, (1, 7): 14, (1, 8): 12, (1, 9): 11, (1, 10): 10, (1, 11): 9, (1, 12): 8, (1, 13): 7, (1, 14): 7, (1, 15): 6, (1, 16): 6, (1, 17): 5, (1, 18): 5, (1, 19): 5, (1, 20): 5, (2, 3): 16, (2, 4): 25, (2, 5): 10, (2, 6): 16, (2, 7): 7, (2, 8): 12, (2, 9): 5, (2, 10): 10, (2, 12): 8, (2, 14): 7, (2, 16): 6, (2, 18): 5, (2, 20): 5, (3, 4): 8, (3, 5): 6, (3, 6): 16, (3, 9): 11, (3, 12): 8, (3, 15): 6, (3, 18): 5, (4, 5): 5, (4, 6): 8, (4, 8): 12, (4, 10): 5, (4, 12): 8, (4, 16): 6, (4, 20): 5, (5, 10): 10, (5, 15): 6, (5, 20): 5, (6, 9): 5, (6, 12): 8, (6, 18): 5, (7, 14): 7, (8, 16): 6, (9, 18): 5, (10, 20): 5}

The sum of all baskets are ::
482

The basket with the maximum length is ::
{60: [1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60]}

The confidence for association rule {5, 7} -> 2 is ::
0.5

The confidence for association rule {2, 3, 4} -> 5 is ::
0.125