How Many Number Of Association Rules Are Possible According To This Basket Data?

How Many Number Of Association Rules Are Possible According To This Basket Data? The total number of possible rules, R, extracted from a data set that contains d items is: R = 3d − 2d+1 + 1 There are d = 6 items in the table( Beer, Bread, Butter, Cookies, Diapers and Milk). Thus: R