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
Answers
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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
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