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infinite series


Find the sums in each of the following series:

1/ 2 + 2/ 4 + 3/ 8 + 4/ 16 + 5/ 32 + . . .

1/ 2 + 3/ 4 + 5/ 8 + 7/ 16 + 9/ 32 + . . .

1/ 1 + 1/ 2 + 1/ 3 + 1/ 4 + 1/ 5 + . . .

Explain how you found your answers.


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