Question

What is the LCM of 5, 13, and 10?

A. 50
B. 65
C. 130
D. 650

Answer 1

The answer is C. 130

Answer 2

Hi.

Firstly, factorise the given numbers :

☆ 10 = 2 × 5

☆ 5 =
`5^(1)`

☆ 13 =
`13^(1)`

Then, count the number of times each prime factor appears in the factorization of all :

L.C.M = 2 × 5 × 13 = 130

Hence


`\boxed{\sf L.C.M = 130}`

Thanks!