有一个数字时钟,以hh:mm:SS显示时间,它是以24小时方式计时.如图为该时钟所显示的一个时刻,此时刻所显示的六个数字

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  • 解题思路:根据“幸运时刻”的定义分情况讨论,分别得到各种情况的个数,相加即可求解.,

    00:00:00,00:11:00,00:22:00,00:33:00,00:44:00,00:55:00,有6个;

    01:00:10,头尾不变中间为11,22,33,44,55,有6个;

    02:00:20,头尾不变中间为11,22,33,44,55,有6个

    03:00:30,头尾不变中间为11,22,33,44,55,有6个

    04:00:40,头尾不变中间为11,22,33,44,55,有6个

    05:00:50,头尾不变中间为11,22,33,44,55,有6个

    10:00:01,头尾不变中间为11,22,33,44,55,有6个

    11:00:11,头尾不变中间为11,22,33,44,55,有6个

    12:00:21,头尾不变中间为11,22,33,44,55,有6个

    13:00:31,头尾不变中间为11,22,33,44,55,有6个

    14:00:41,头尾不变中间为11,22,33,44,55,有6个

    15:00:51,头尾不变中间为11,22,33,44,55,有6个

    20:00:02,头尾不变中间为11,22,33,44,55,有6个

    21:00:12,头尾不变中间为11,22,33,44,55,有6个

    22:00:22,头尾不变中间为11,22,33,44,55,有6个

    23:00:32,头尾不变中间为11,22,33,44,55,有6个

    6x16=96个.

    故答案为:96.

    点评:

    本题考点: 轴对称.

    考点点评: 本题考查了“幸运时刻”的定义,难度较大,关键是找到其中的规律.