Question

5. If the arithmetic mean of n, numbers of a series is x
and the sum of the (n-1) numbers is k, then the nth
number is -
(A) nuk
(B) nx +k
(C) nx-k
(D) n-k​

Answer 1

Answer:

nx-k

Step-by-step explanation:

Sum = Mean*Average

Therefore Sum of series = n*x

Sum of n-1 number is k

Therefore nth number = Sum of series-Sum of n-1 numbers=nx-k