Question

lcm of 25 and 40

Answer 1

list out the prime factorization of each number


25: 5*5
40: 2*2*2*5


Then notice how we have two basic prime factors: 2 and 5

The 2's occur 3 times, and the 5's occur twice, so multiply these occurrences to get

2*2*2*5*5 = 8*25 = 200



therefore, the LCM is 200