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问题原型五个人站一圈进行传球游戏,规定只能将球传给自己相邻的人,现由A开始第一次传球,求经过十次传球后球重新回到A手中的概率.分析不妨规定顺时针方向为正方向,则顺时针传球一次记为+1,反时针传一次记为-1,把最终结果记成一排十个数字,则球最终能回到A的手中有两类情况,一?
The problem prototype five people stand in a pass to pass the game, the provisions of the ball can only be passed to their neighbors, is now the first pass from A to pass, after passing 10 times the ball back to the A hand probability The analysis may wish to specify that the clockwise direction is a positive direction, then clockwise passing a ball is counted as +1, counterclockwise transmission is counted as -1, and the final result is recorded as a row of ten numbers, then the ball can finally return to A’s hand. There are two types of situations, one?