Question

What is the Lcm for 5,6,7

Answer 1

The three numbers have no prime divisors in common:

$5=5,\quad 6=2\times 3,\quad 7=7$

So, the least common multiple is the product of the numbers:

$\text{LCM}(5,6,7)=5\times 6\times 7 = 210$

Answer 2

Answer:

210

Step-by-step explanation:

List the multiples of 5, 6, and 7. (Yes, there are more easier meathods than this.)

The first common multiple is the lowest common multiple (or LCM).

The LCM is 210

Multiples of 5:

5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100... 210, 215, 220

Multiples of 6:

6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, 84, 90, 96, 102, 108, 114... 210, 216, 222

Multiples of 7:

7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105, 112, 119, 126, 133, ... 210, 217, 224