Question

if LCM of a and 18 is 36 and HCF of a and 18 is 2 then value of a will be

Answer 1

we know lcm×hcf=product of the numbers
So , a×18=36×2
or , a=4

Answer 2

LCM( a , 18 ) = 36

HCF( a , 18 ) = 2


LCM × HCF = Product of Two numbers

So,

36 × 2 = a × 18

a = 72/18

a = 4