逻辑41``50（Logic 41 ` ` 50）.doc

逻辑41``50（Logic 41 ` ` 50） [41] there are 23 COINS on the table, 10 heads up. Suppose someone blindfolded you, and your hand could not touch the reverse side of the coin. Let you use the best way to divide the COINS into two piles, with the same number of COINS on each side. [41] divide into 10 + 13, then flip the 10 pile [42] the three villages A, B, C and three towns A, B, and C are located in the craters shown in the picture. For historical reasons, only the village of the same name has intercourse with the town. In order to facilitate the traffic, they are going to repair the railway. The question is: how to build three railway lines connecting A village and A town, B village and B town, C village and C town in this crater. And these railroads dont intersect each other. (digging a cave, building a bridge, not counting, is definitely a plane problem). Think out the answer and think about what the problem is. Low low low low low low low low low C low low low low low low low low low low low low low low low low low low low low low low C B low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low low 【42】 作图如下: ●●●●●●●●●Ｃ●●●●●●●●●● ● ● ● ● ● ● Ａ ＣＢ ● ● ● ● ● ● ● ● ● ● Ｂ ● Ａ ● ● ● ● ●●●●●●●●●●●●●●●●●●●● [43] there are three lights in the house, three switches outside the house, a switch that controls only one lamp, and how to see which switch controls which lamp when one enters the house only once in the house? 4. [43] the light temperature, first open a lamp, closed after long enough, open another one, came into the room to see, bright open for later, feels hot first open, the rest of the a lamp that is sure. Establish four 4: the light switch for the ABCD, first open AB, long enough after clearance B, C, and then entered the room, hot and bright for A, hot not only bright for B, bright not only heat for C, not bright hot for D. [44] 2 + 7-2 + 7, all have a ma