Question
In an A.P. a = -2, d = 4 and S_(n) = 160, find n.
Answer
4.7
(316 Votes)
Wallace
Master · Tutor for 5 years
Answer
t the Associated Press, take that into account.
and
Given that the sum of first
terms in the series is
We know that the sum of first
terms in the series is
Since
is positive integer , the value of