10a
12a
5abc
12a2bc
60a2bc
Correct answer is B
LCM of 15abc and 20a2bc = 60a2bc
Factors of 15abc = 1, 3, 5,15, a, b, c
and of 20a2bc = 1, 2, 4, 5, 10, 20, a, b, c
HCF of 15abc and 20a2bc = 5abc
→ LCM ÷ HCF = 60a2bc ÷ 5abc
= 12a
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