Name some animals which have rib-cages.
Some animals with rib-cage are cats, dogs, snakes and cows.
(i) With respect to rib cage, explain the following
bicephalic ribs
(ii)
With respect to rib cage, explain the following
true ribs
(iii) With respect to rib cage, explain the following
Floating ribs
Eleven animals of a circus have to be placed in eleven cages (one in each cage). If 4 of the cages are too small for 6 big animals, then the number of the ways of caging all the animals is :