  We review results about the density of typical lattices in $R^n.$ They state
that such density is of the order of $2^{-n}.$ We then obtain similar results
for random packings in $R^n$: after taking suitably a fraction $\nu$ of a
typical random packing $\sigma$, the resulting packing $\tau$ has density
$C(\nu) 2^{-n},$ with a reasonable $C(\nu).$ We obtain estimates on $C(\nu).$
