2) Will the answer be a single color (either black or white) or “mixed” if the maximum number of turns is reached? Mixed
3) Why?
a) If B and C have four of the same color, A knows the answer immediately (one turn)
b) If A and C have four of the same color, B knows the answer immediately (two turns)
c) If A and B each have two of the same color, C knows that he (C) has a mix, since if he (C) also had solid colors A or B would have guessed the answer (three turns).
Gut Shabbos.