What is The Sum of n Terms ?

What is the sum of n terms of the series √2 +√8+√18+√31 + ……?

  1. n(n-1)/ √2
  2. √2n(n-1)
  3. n(n+1)/ √2
  4. n(n-1)/2
Anurag Mishra Professor Asked on 30th September 2015 in Maths.
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