In a data the number `i` is repeated `i` times for i=1, 2,..., n. Then the mean of the data is

If the mean of the set of numbers x_1,x_2, x_3, ..., x_n is barx, then the mean of the numbers x_i+2i, 1 lt= i lt= n is

If the mean of the set of numbers x_1,x_2, x_3, ..., x_n is barx, then the mean of the numbers x_i+2i, 1 lt= i lt= n is

If the mean of the set of numbers x_1,x_2, x_3, ..., x_n is barx, then the mean of the numbers x_i+2i, 1 lt= i lt= n is

If each of n numbers x_(i)=i , is replaced by (i+1)x_(i) , then the new mean is

If each of n numbers x_(i)=i , is replaced by (i+1)x_(i) , then the new mean is

If the mean of the set of numbers x_(1),x_(2),...x_(n) is bar(x), then the mean of the numbers x_(i)+2i,1<=i<=n is