Question: what is the least common factor of 9 12 and 15?
Answer: The LCM of 9,12,15 9 , 12 , 15 is the result of multiplying all prime factors the greatest number of times they occur in either number. The LCM of 9,12,15 9 , 12 , 15 is 2⋅2⋅3⋅3⋅5=180 2 ⋅ 2 ⋅ 3 ⋅ 3 ⋅ 5 = 180 .