Question

Sum of
of n terms of the AP √2,√8,√18,√32,........ is
​

Answer 1

Answer:

The series can be rewritten as

2

+2

2

+3

2

+4

2

+.....

So the nth sum S

n

=

2

×(1+2+3+.....+n)

=

2

2

×n×(n+1)

=

2

n(n+1)

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