If we want to consider this problem, we should first look at the characteristics of numbers, 1 2 3 4 5 6 7 8 9 0. Of this number 10, only 1 8,0 or so looks the same.

In addition, considering that the product is the sum in the mirror, the discharge is only 1 digit, unless there are 0 chickens and ducks, which is unreasonable; Or 1 chicken and duck is unreasonable. So it should be 2.

If you consider two digits, you should pay attention to the opposite of the two-digit photos in the mirror.

Then a simple consideration is to combine these three numbers and find that 8 1 reflected in the mirror should be 18, and 8 1=9*9, 18=9+9, so one * * 9 chickens and nine ducks.

PS: This topic is actually very imprecise. . . . .