Question 7
In the cryptarithm shown, different letters represent different digits and identical letters represent the same digit. What is the greatest value of the three-digit number GOO?
The addition is DUCK + DUCK = GOOSE. Leading digits D and G are nonzero.

Enter one whole number, without units.
The addition is DUCK + DUCK = GOOSE. Leading digits D and G are nonzero.

Enter one whole number, without units.