What are the lcm of

Question

450,720 and 1170?

Answer 1

The numbers are 450, 720 and 1170

Write the prime factorization of each number

450 = 2 * 5 * 5 * 3 * 3 = 2 * 3² * 5²

720 =  2 * 2 * 2 * 2 * 5 * 3 * 3 = 2⁴ * 3² * 5

1170 =  2 * 5 * 3 * 3 * 13 = 2 * 3² * 5 * 13

Multiply highest power of  each factor in the either number.

Least common multiple =  2⁴ * 3² * 5² * 13

             = 46800

Least common multiple of 450, 720 and 1170 is 46800.