Question

LCM & HCF OF 9 18 21

Answer 1

lcm. =126

GCF = 3

for the values 9, 18, 21

Solution by Factorization:

The factors of 9 are: 1, 3, 9

The factors of 18 are: 1, 2, 3, 6, 9, 18

The factors of 21 are: 1, 3, 7, 21

Then the greatest common factor is 3.

Answer 2

Answer:

see the picture attached