To find the least common multiple (LCM) of 30, 100, and 60, you can use the prime factorization method or the division method.
Using the prime factorization method:
Step 1: Prime factorize each number:
30 = 2^1 * 3^1 * 5^1 100 = 2^2 * 5^2 60 = 2^2 * 3^1 * 5^1
Step 2: Take the highest power for each prime factor:
2^2 * 3^1 * 5^2 = 2 * 2 * 3 * 5 * 5 = 300
Therefore, the LCM of 30, 100, and 60 is 300.
Using the division method:
Step 1: Start with the largest number, 100.
Divide 100 by 30: Quotient = 3, Remainder = 10
Divide 100 by 60: Quotient = 1, Remainder = 40
Step 2: Move to the next number, 40.
Divide 40 by 30: Quotient = 1, Remainder = 10
Step 3: Move to the next number, 10.
Divide 10 by 30: Quotient = 0, Remainder = 10
Divide 10 by 60: Quotient = 0, Remainder = 10
Step 4: The common remainder is 10.
Step 5: Multiply all the divisors and the common remainder together:
30 * 60 * 10 = 18000
Therefore, the LCM of 30, 100, and 60 is 18000.
Both methods yield the same result, which is 300.
