首先,我们需要找到 42 和 12 的所有公倍数,即能同时被 42 和 12 整除的数。

42 的倍数:42,84,126,168,210,252,294,336,378,420,462,504,546,588,630,672,714,756,798,840,882,924,966,1008,1050,1092,1134,1176,1218,1260,1302,1344,1386,1428,1470,1512,1554,1596,1638,1680,1722,1764,1806,1848,1890,1932,1974,2016,2058,2100

12 的倍数:12,24,36,48,60,72,84,96,108,120,132,144,156,168,180,192,204,216,228,240,252,264,276,288,300,312,324,336,348,360,372,384,396,408,420,432,444,456,468,480,492,504,516,528,540,552,564,576,588,600,612,624,636,648,660,672,684,696,708,720,732,744,756,768,780,792,804,816,828,840,852,864,876,888,900,912,924,936,948,960,972,984,996,1008,1020,1032,1044,1056,1068,1080,1092,1104,1116,1128,1140,1152,1164,1176,1188,1200,1212,1224,1236,1248,1260,1272,1284,1296,1308,1320,1332,1344,1356,1368,1380,1392,1404,1416,1428,1440,1452,1464,1476,1488,1500,1512,1524,1536,1548,1560,1572,1584,1596,1608,1620,1632,1644,1656,1668,1680,1692,1704,1716,1728,1740,1752,1764,1776,1788,1800,1812,1824,1836,1848,1860,1872,1884,1896,1908,1920,1932,1944,1956,1968,1980,1992,2004,2016,2028,2040,2052,2064,2076,2088,2100

我们可以看到,42 和 12 的公倍数有 84,168,252,336,420,504,588,672,756,840,924,1008,1092,1176,1260,1344,1428,1512,1596,1680,1764,1848,1932,2016,2100。

因此,42 和 12 的最小公倍数是 84。

42 和 12 的最小公倍数

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