Suppose a variable assumes the values 0,1,2,3,...n with frequencies proportional to binomial coefficients `nc0,nc1,nc2,nc3,...,,ncn.` Find the mean of variables.

Suppose a variable assumes the values, 0, 1, 2,………….n with frequencies proportional to bionomial coefficients nC_0 , nC_1 ,………… nC_n respectively. Find the mean of the variable.

Suppose a variable assumes the values 0, 1, 2………….n with frequencies proportional to binomial coefficeints ^nC_0, ^nC_1, ^nC_2,………..^nC_n respectively. Find the mean of variable.

The mean of the values 0,1, ......n with corresponding weights .^nC_0,^nC_1,........^nC_n respectively is

If .^nC_0,^nC_1,^nC_2,.....^nC_n are frequencies of n+1 observations 1,2,2^2,.....2^n such that mean is 729/2^n then value of n is:

If , ^nC_1,^nC_2 and ^nC_3 are in AP. Find the value of n.

Median of 2nC_(0),2nC_(1),2nC_(2),....,2nC_(n) (when n is even) is