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## Answers

9+1/9-1+25+1/25-1+99+1/99-1
10/8+26/24+100/98
1.25+1.08+1.02
2.33+1.02
3.35

**x = 3, 5, 7, ...., 99**(odd numbers).

Now write first three or four terms of series, each in new line, by putting x = 3, 5, 7, 9. You can see that some terms will be cancelled out.

The final sum is given by , it simplifies to

**Answer =**