They are all multiples of 9 thus is why the letters change.
You do any answer when the symbols change, and your answer will come out to that specific symbol on any of them. :)
So, check the symbol to your answer, but don't click the crystal ball to get the answer yet. Do another number, and you'll find the symbol is the same as the other number's symbol!!!!!
EXAMPLE, currently
I do 26... so, 2 + 6 = 8. 26 - 8 = 18.
Symbol for 18 is SNOWFLAKE.
K... NOW, I didn't click the magic ball yet, so let me choose any other number! I'll do, 11!
1 + 1 = 2 ... so 11 - 2 = 9.
Symbol for 9 is SNOWFLAKE!
....... all in all if you choose a number without the magic ball, it'll have the same symbol for an answer. The reason to 'try again' is to choose another number and make it appear it comes up with different answers, but no, the symbols are changed to make it appear that way!
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