10. Listen closely: 30 cows, and twenty-eight chickens. Say EIGHT and ATE. They sound the same. Therefore, it means 20 ATE chickens. 30-20=10, so 10 cows didn’t eat any chickens.

Felice and Nicholas are the murderers. The numbers correspond to atomic numbers on the periodic table of elements: ‘Fe-Li-Ce/Ni-Co-La-S’.

A Surprise.

BC is before Christ. Christ was not yet born when the coin would have been made and the date would be impossible.