* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.
I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?