Total number of possible types of Jeans in trms of size/ color /style
= 7 ( types of sizes) x 4 ( tyoes of colors ) x 2 ( types of style )
= 56 types
Thus store manager need to order 56 types to have 1 type of each variety
Therefore number of jeans store manager needs to order to have one pair ( 2 numbers ) of each type = 56 x 2 = 112
Therefore, store manager need to order 112 number of Jeans