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?

×

Problem Loading...

Note Loading...

Set Loading...