展开全部
12,13,14,15,16,17,18,19,
21,23,24,25,26,27,28,29,
31,32,34,35,36,37,38,39,
41,42,43,45,46,47,48,49,
51,52,53,54,56,57,58,59,
61,62,63,64,65,67,68,69,
71,72,73,74,75,76,78,79,
81,82,83,84,85,86,87,89,
91,92,,93,94,95,96,97,98,
共可拼成 8x9=72个 两位数
21,23,24,25,26,27,28,29,
31,32,34,35,36,37,38,39,
41,42,43,45,46,47,48,49,
51,52,53,54,56,57,58,59,
61,62,63,64,65,67,68,69,
71,72,73,74,75,76,78,79,
81,82,83,84,85,86,87,89,
91,92,,93,94,95,96,97,98,
共可拼成 8x9=72个 两位数
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