Question

the lcm of two number is 819 if the two numbers are 63 and 117 find the hcf ​

Answer 1

Step-by-step explanation:

252 = 2 x 2 x 7 x 9

Factorize the HCF

4 = 2 x 2

The HCF is the common factor for both numbers whereas the LCM contains all the unique factors of both numbers.

So, 2 x 2 or 4 is a common factor for both numbers.

The factors remaining are 7 and 9.

So, 7 is a factor of one number and 9 is the factor of the second number.

The first number = 4 x 7 = 28

The second number = 4 x 9 = 36

Answer 2

Answer:

their HCF is 9

Step-by-step explanation:

63×117=819×hcf

63×117/819= HCF

therefore HCF is 9