Report Numbered Foreheads Concluded in New Logic/Math Puzzles Posted November 15, 2013 ThunderCloud Hypothetically, had A in fact seen B=335 and C=334 All three stickers actually had the same number written on them. We know that A sees B=334 and c=334 - A CANNOT see B=335 and C=334. (Not to confound with: "As this information in not available to him, he ASSUMES he has 334 or 335.") So my first answer was correct. In the 2nd try, I got lost and could not correct quickly enough. B does not know that all three stickers have 334 on them. Therefore, B does not know whether A sees B=334 or B=335. When A responds by passing, this still does not tell B what A has seen. B thinks: 1. if A saw B=334, then A must have been unable to decide if his number was A=334 or A=335. 2. if A saw B=335, then A must have been unable to decide if his number was A=334 or A=333. Either way, B cannot call out his number yet; he doesn't know it.