def count_false_positives_within_list(class_predictions, LIST_c):
    """
    Count the number of false positives from classes in the list LIST_c

    LIST_c: List of classes whose predictions in class_predictions we are interested in
    """

    false_positive_count = 0

    for item in range(len(class_predictions)):
        if item in LIST_c:
            false_positive_count += class_predictions[item]

    # Return the false positive count
    return false_positive_count