Question

the HCF and LCM of two numbers A and B are respectively 27 and 2079 if a is divided by 9 the quotient is 21 then.b is

Answer 1

________________________40

Answer 2

So a is 21(9)=189. a×b=L.C.M.×H.C.F.=2079×27
=>b×189= 2079×27
=> b=2079×27/189=297.
Formula Used: let's take two numbers x and y.
$x \times y = lcm \times hcf$

LCM is least common multiple and HCF is highest common factor.