Question

the LCM of the two numbers is 8 1 9. if the two numbers are 63 and 117 comma find the HCF.​

Answer 1

Answer:

there are two important methods to find the HCF,

first method

finding factors of 63 and 117

63= 3 x 3 x 7

117= 3 x 3 x 13

here common factors are 3 x 3= 9

therefore the HCF will be 9

now second method

LCM x HCF= product of the two numbers

819 x HCF= 7371

HCF= 7371/819

HCF= 9

so from these two methods, you can find the hcf