Elementary combinatorics: Arithmetic and geometric sequences
Arithmetic sequences
Write the following sum belonging to an arithmetic sequence \[8+11+14+\cdots + 53\] in sigma notation with summation index \(k\) and calculate it
| \(8+11+14+\cdots + 50+ 53 = {}\) |
| \(8+11+14+\cdots + 50+53 = {}\) |
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