LSAT logic games: ordering
Six Speakers, Six Slots
Six speakers, six slots, four rules. A three-minute film that acts the rules out on a stage, counts the orders that survive them, from seven hundred twenty down to fourteen, and shows what 'must be true' really means.
This browser has 3D graphics turned off, so the set cannot be drawn. The math and the narration still play.
The problem
Six speakers, F, G, H, J, K and L, speak one at a time in slots 1 to 6. K speaks third or fourth. J speaks immediately after F. G speaks before H. L does not speak first. If L speaks second, which one of the following must be true? (A) F speaks fourth (B) H speaks sixth (C) G speaks first (D) K speaks third (E) J speaks fifth
(C) G speaks first: the three legal orders with L second are G L H K F J, G L K F J H and G L K H F J
