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Mathematics
Mathematics
Problem
The sum of the first 20 terms of the series
5
+
11
+
19
+
29
+
41
+
…
5 + 11 + 19 + 29 + 41 + \ldots
5
+
11
+
19
+
29
+
41
+
…
is (a) 3450 (b) 3420 (c) 3520 (d) 3250
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