328! :)
the average number of beans in a in of beans is between 420 and 450
It depends if it is round, square etc. In a competition, I guessed 980.
If the can is big, then about 100 beans, but if it's a small can, then about 40 beans.
That cannot be answered. It will depend upon the size of the can, the type and size of beans used and the recipe. Precisely one can full.