Question: what is the difference between h.c.f and l.c.m?
Answer: The LCM of two integers is the smallest whole number that appears in both of their times tables, that is, the smallest integer that is a multiple of both numbers. For example, the LCM of 4 and 5 is 20. ... The HCF of two integers is the largest whole number that divides both numbers without leaving a remainder.