# What is the LCM of 42 and 70?

LCM of (42 and 70): The least/smallest number which is completely divisible by both 42 and 70

## Answer: LCM of 42 and 70 is 210

## Explanation:

The least common multiple is the smallest number which is exactly divisible by both the given numbers.

### Methods to Find LCM of 42 and 70

### LCM of 42 and 70 by Listing Method

- Write the multiples of the given numbers.
- Identify common multiples.
- In common multiples, smallest one is LCM

### LCM of 42 and 70 by Formula

The formula of LCM is LCM (a,b) = (a × b) / GCF (a, b)

The greatest common factor of (42,70) = 14

Therefore

LCM of 42 and 70 = (42 × 70) / 14

= 2940/14 = 210

LCM of 42 and 70 = 210