9. On the table, there are param 1 externally identical coins. It is known that among them, there are exactly param 2 counterfeit ones. You are allowed to point to any two coins and ask whether it is true that both these coins are counterfeit. What is the minimum number of questions needed to guarantee getting at least one "Yes" answer?

| param1 | param2 |  |
| :---: | :---: | :---: |
| 120 | 60 |  |
9. On the table, there are param 1 visually identical coins. It is known that among them, there are exactly param 2 counterfeit ones. You are allowed to point to any two coins and ask whether it is true that both these coins are counterfeit. What is the minimum number of questions needed to guarantee that you will get at least one "Yes" answer?

| param1 | param2 | Answer |
| :---: | :---: | :---: |
| 120 | 60 | 63 |