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.
There were no 1901 dollar bills
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.
10 ten dollar bills
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.