Anyone who did not get the letter "D" for the first letter of the country can't multiply or subtract (or something). The only way to NOT get "D" is by pure math error.
Once you have the "D", I'd guess that 95+% of the population would pick Denmark.
Once you have the "k" from Denmark, I'm guessing 90+% would pick kangaroo, with a smaller % picking koala (sp?)
If you have Kangaroo - you end up with "o", and the most common "o" fruit is definitely an orange. I'd guess 99+% would say "orange" at this stage.