Elementary combinatorics: Arithmetic and geometric sequences
Arithmetic sequences
Write the following sum belonging to an arithmetic sequence \[5+8+11+\cdots + 50\] in sigma notation with summation index \(k\) and calculate it
| \(5+8+11+\cdots + 47+ 50 = {}\) |
| \(5+8+11+\cdots + 47+50 = {}\) |
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