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3 - 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99, 102... etc.

30/7= 4.28 No

60/7 = 8.57 No

90/7 = 12.85No

120/7 = 17.14 No

150/7 = 21.42 No

180/7 = 25.71 No

210/7 = 30 Yes

the LCM ending in a zero is 210

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14y ago

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