Final answer:
The two bills on the table are option B. a one dollar bill and a two dollar bill.
Step-by-step explanation:
To find out what kinds of bills are on the table, we need to consider the following: one of the bills is not a $1 bill and the sum of the two bills is $3. Let's analyze the options:
- If there were two $2 bills on the table, the sum would be $4, which is more than $3. So, option A is not correct.
- If there were one $1 bill and one $2 bill on the table, the sum would be $1 + $2 = $3. This satisfies the conditions given in the question. So, option B is correct.
- If there were one $2 bill and one $1 bill on the table, the sum would still be $1 + $2 = $3. This is the same as option B, just the order is different. So, option C is also correct.
- If there were two $1 bills on the table, the sum would be $1 + $1 = $2, which is less than $3. So, option D is not correct.
Therefore, the correct answer is Option B: One $1 bill and one $2 bill.