Question

if the arithmetic mean of n numbers of a series is x and the sum of the first (n-1) terms is k. then the nth term of the series is given by........?​

Answer 1

Answer:

nth term of the series is given by  (nx - k)

Step-by-step explanation:

let suppose we have a series

a1, a2, a3, . . . . . . .,an ---------------1

arithmetic mean = a1, a2, a3, . . . . . . .,an / n

we can write

x = a1, a2, a3, . . . . . . .,an / n

now, the sum of the first (n-1) terms is k

we can write

k + an = nx

an = nx -k

Answer 2

Answer:

Step-by-step explanation: