ITOT 43 Spring 2022 - THCS O - additive practice Question 3

There are 11 indistinguishable-looking coins:7 genuine and 4 counterfeit. All genuine coins have equal mass; all counterfeits have equal smaller mass. Fox gives Pinocchio 4 coins. Can he determine in only two balance-scale weighings whether all four are genuine? (5 points)



Neutral editorial illustration.