Question

if the HCF and LCM of two numbers are 8 and 280 and one of the number is 56, find the other number

Answer 1

hcf*lcm=1st no*2nd no

therefore,2nd no=hcf*lcm/1st no
                           =8*280/56
                           =40

the other no is 40...

Answer 2

40 because

Hcf*lcm=1st no.*2nd no.
.
. . 2nd no.=LCM*HCF/1st no.
=8*280/56
= 40