If you have one $50 bill, one $20 bill, one $10 bill and one $100 bill, how many possible sums of money consisting of three bills each, can be formed?

Answer 1

50, 20, 10 = 80

50, 20, 100 = 170

50, 10, 100 = 160

20, 10, 100 = 130

so 4 sums, correct me if i am wrong