Hello! This is Bonus, a lovely doxie dog. My dad just bought me a small safe but I don’t know the password to open it. Can you help me find the correct code?

Let’s go through the hints below:

From this clue, we can eliminate **7,3,8** as possibilities

After eliminating, we have **6,2,4,5,0** as valid numbers. But we have to do more elimination.

Either **2** is correct or **6** is correct but not both

If **6** was in the correct position in **682**, it would also be in the correct position for **645**. So **6** cannot be correct. It means **2** is correct and correctly positioned in **682**.

So we’ve eliminated **6** as possible number and **2** has to be correct and in the third spot. Now from the second, we know that **6** is not a correct number and we know one number is correct so either **4** or **5** is correct but not both.

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Let’s go to the third clue. Well, as we have known **6 **is not the correct number and we have two correct numbers so that means both **2** and **0** are correct number but they are in the wrong positions in **206** so **0** must actually be the correct number. From **682**, we know **2** is in the third position. So then **0** must be in the first position. Now the password looks something like **0?2**

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How to get the final third number? Let’s take a look at this clue again. The password is either **042 **or **052**. If the password was **042**, then **645 **would have a number **(4)** in the correct position, however it does not. Therefore the password must be **052**.

Now you can unlock the safe with the code **052.**