The sum of the 1st 4 terms is a1 + a2 + a3 + a4 = 8 * 10 = 80
The sum of the first 5 terms is 80 + a5 = 110
Therefore, a5 = 30
Peter M.
asked • 10/18/18the sum of the first n terms of a series is given by Sn=2n(n+6), find the 5th term of the series
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