Question
How many different sums of money can be formed from one $2 bill, three $5 bills, two $10 bills, and one $20 bill?
the answer at the back of the book is 23, but i don't know how to solve it.
the answer at the back of the book is 23, but i don't know how to solve it.
Answers
Xhao
2c1 2c2 2c3 2c4 - 1