Find the least common multiple of 125 and 320.?

Answer 1

First look at the prime factors for each number:

125 = 5 x 5 x 5
320 = 2 x 2 x 2 x 2 x 2 x 2 x 5

Then you take the largest number of occurrences of each prime number and multiply it out. In this case there are six twos and three fives, so 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 5 = 8000. Eight thousand is the least common multiple of 125 and 320.

Answer 2

125=1,5,25,125,250,375
320=1,2,5,10,20,40,80,160,320,640

lcm is 5

Answer 3

40,000

Zef H is right. 8000 is the correct answer.