How many ordered lists are there of two items chosen from seven? ordered lists

Since we want the order in which items are picked, we are talking about permutations and not combinations.
Using the permutation formula, our n becomes 7, because this is the total of subsets we have, while 2 is the one we are looking for (items).

Thus, to pick two items from seven, we have:



Thus, we have 42 ways to pick two items from seven if we wanted order.