# Poor Taylor #2 : She's going crazy again...

Taylor has an unlimited amount of $$$7$$ and$$$9$$ dollar bills. Now she's craving for donuts. . Logically speaking she can buy any amount of donuts, so long she's happy. But now she DOES NOT WANT ANY CHANGE. Assuming each donut costs \$$$1$$ , how many different numbers of donuts (from $$11$$ to $$100$$ ) CAN'T she buy?

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