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For each given geometric sequence, find the sum of the first:

1. 5 terms of 1/2 , 2/3 , 8/9,...

2. 8 terms of 0.2 , 0.02 ,
0.002,...

3. 6 terms of 1/2 , 1/4 , 1/8,...

4. 5 terms of 5/2 , 15/2 ,
45/2,...

5. 7 terms of 0.25 , 1 , 4 , 16,...​​