5
Obviously worth two dollars.
5 Dollar Bills Are Very Common. They are still being printed, for as far as I know, 2 dollar bills are rare but still worth the same value.
Many of these bills have been cut as described on purpose to perform illusions. These bills were cut from uncut sheets purchased from the Bureau of Engraving and Printing.
There were no 1901 dollar bills
10
10
10
If you had a sheet of uncut two dollar bills, they would be worth far more than just two bills. Depending on their condition, the bills together would fetch between $2 and $10.
Reading the question very carefully, I'd have to say "none". If the stack consists of "900 dollar bills",then there are no "50 dollar bills" in it.But the questioner is probably referring to equivalent values.900 dollar bills have a face value of $900.00 . In order to match that same face value with $50.00 bills,you need 18 of them.
10 ten dollar bills
You can still buy uncut sheets from the Bureau of Engraving and Printing. This is not an error. Value is $4.
If there are d $1 bills their value is $1 × d, or d dollars.Each $5 bills is worth 5 times as much so if there are f bills their value is $5 × f, or 5f dollars.Thus the expression for the total would be d + 5f dollars.