Three different ways.
Using only positive digits, and disregarding their order, 3 ways.
19
It depends on which country's currency the question is about.
you can make 40 cents withiut using pennies 7 ways
There are 10 ways.
22 ways
51
Three different ways.
9=10
Two ways only: one with a pasta maker. The other using a rolling pin.
There are 47 ways.
There are 12 ways.
Using only positive digits, and disregarding their order, 3 ways.
From my calculations, there's only 293 ways to make change for a dollar.
10
19