Question

Find hcf and lcm of 105and 120

Answer 1

Hcf-

A=bq+r

120=105+15

105= 15*7

Therefore hcf= 15

Lcm-

120*105/15

= 840

Answer 2

105 : 3*5*7

120 : 2*2*2*3*5

HCF=3*5

=15

LCM=2*2*2*3*5*7

=840

HOPE u'll understand!!