If the L.C.M and H.C.F of two numbers are 24, 4 and one of the numbers is 8, then the second number is

One of the numbers, $a=8$

Let a, b are two numbers, then $a\times b=L.C.M\times H.C.F$

$\Rightarrow 8\times b=24\times 4$

$\Rightarrow b=\frac{24\times 4}{8}$

$=3\times 4$

$=12$