Series
series 1: 1/1.2 +1/2.3 +...+1/n(n+1)
series 2: 1.3 +2.4 + 3.5 +....+n(n+2)
  Enter the n value( i)
  Find nth number(series1): 1/
Find Sum(series1):1/
Find Arithmetic Mean(series1)
Find nth number(series2)
Find SUM(series2)
Find Arithmetic Mean(series2)
 
Series 1 ---nth number=1/n(n+1) ; SUM=n/(n+1)

Series 2 ---nth number=n(n+2) ; SUM=n(n+1)(2n+7)/6