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15 = 3 x 5
21 = 3 x 7
27 = 3 x 3 x 3

hcf of 15 and 21 is 3

lcm of 15 and 21 = 15 x 21 / 3 = 105

hcf of 105 and 27 = 3

lcm of 105 and 27 = 105 x 27 / 3 = 945

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โˆ™ 2009-11-03 23:29:21
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Q: What is the LCM of 15 21 27?
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