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Show that:           C0 - C1 (1+x / 1+nx) + C2 [1+2x / (1+nx) 2] - C3 [1+3x / (1+nx) 3] + ……..= 0

Find the sum of the series: ∑ (-1) r. nCr (1/2r + 3r/22r + 7r/23r + …… + up to m terms)       r goes from 0 to n.

```
8 years ago

8 Points
```										Dear Prathamesh,
In order to get the sum of the series you have to provide the first three terms , then only one can understand what is the nature of the series. For e.g, if I give a series as follows,
2 , 4 , .......................................................... till nth term
Now can you tell me is it in G.P or A.P or A.G.P or H.P
Ofcourse not! So this is the problem in the question:
8/5 + 16/65 + ..................................+ 128/218 + 1 .
```
8 years ago
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