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Mathematics
Mathematics
Problem
Identify the series that converges. a)
7
+
7
+
7
+
⋯
7+7+7+\cdots
7
+
7
+
7
+
⋯
b)
5
+
2.5
+
1.25
+
⋯
5+2.5+1.25+\cdots
5
+
2.5
+
1.25
+
⋯
c)
8
−
12
+
18
−
⋯
8-12+18-\cdots
8
−
12
+
18
−
⋯
d)
10
+
15
+
22.5
+
⋯
10+15+22.5+\cdots
10
+
15
+
22.5
+
⋯
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