In reply to dave_59:
Thanks Dave! I got what you are saying.
To be more clear, if the weights are such that
Weightage :
cmd size
------------------------------
cmd_B =90% size_64 == 10%
cmd_A =10% size_others = 90%
The combinations can be
{cmd_B, size_64} <= 10% of total weight,
But also, since the cmd_A is only chosen 10% of the time,
{cmd_A, size_64/size_others} ~= 10% of total weight.
Therefore, does this mean the above combination of legal values will happen almost in equal numbers . i.e 50% of the total number of legal combinations.