Question: How many four letter words can be made in increasing order. For instance, "aade" is a possibility, but "adae" is not. Solution: I honestly don't understand how I can solve this, I tried making a formula but it doesn't seem to work. The formula I came up with is: 1 + (3 x (25-n)) where n = 0 when the alphabet is a, n = 1 when the alphabet is b, and so forth. Any help would be greatly appreciated since I have to hand in the solution to this problem by tomorrow morning's class. :surprised Thanks.