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Mathematics
Problem
Determine whether the infinite series
5
−
2.5
+
1.25
−
0.625
+
5
16
−
5
32
+
5
64
−
5
128
+
⋯
5 - 2.5 + 1.25 - 0.625 + \frac{5}{16} - \frac{5}{32} + \frac{5}{64} - \frac{5}{128} + \text{⋯}
5
−
2.5
+
1.25
−
0.625
+
16
5
−
32
5
+
64
5
−
128
5
+
⋯
converges. Give a brief reason for your answer.
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