why do they mention 20 cup of cook rice instead of 10 cup of rice ??? they sell 11 cooker at amazon by title of 10 cup & 20 cup ... they all produce 20 cup of cook rice . why not just categorize they all by 10 cup ? also I have not measure cook rice ... but very much doubt if it be 20 cup ! another problem be , we Indians normally cook rice , rice : water = 1:2 ratio . so the cooker only cook 6 3\/4 of uncooked rice . the cup be base on measurement of a tea cup -lrb- 6 fl oz -rrb- in Asia . so we Asians can cook only 6 3\/4 rice ! aroma be confuse the customer with all they model . the 10 cup model which produce 20 cup of cook rice selling at amazon be - arc-1010 sb , arc-960 sb , arc-940 sb , arc-930 sb , arc-900 sb , arc-150 sb , arc-1000 , arc-200 , arc-1260 f , arc-730 g , arc-790 sd-ing .