There are 64 different outcomes (64 different items, including some results that result in creating an item that can easily be obtained). The actual amount of mixable combinations is far larger. The amount of items mixable also remains similar in FFX-2. There are 2312 (I think) mixing combinations in FFX-2, so in FFX, there are slightly less possible items mixed (I lost my poster that had all the mixes on it from the FFX strategy Guide, so no exact numbers), but in FFX, there are 64 outcomes, and in FFX-2, the number is decreased to 53.

The people who can count, are the people who care enough to waste their time learning and figuring out how to tell you,