Q-2 (5 points) What is waste from lean production viewpoint? Q-3 (10 points) A factory has a total inventory of 600 class " A " items, 1800 class "B" items and 3000 class " C " items. Class " A " items have to be counted once in a month. Class " B " items have to be counted once in a two months. Class " C " items have to be counted once in 6 months. If one month has 20 working days and if one worker can count 20 items per day how many workers does the factory need for counting