Elementary combinatorics: Arithmetic and geometric sequences
Arithmetic sequences
Write the following sum belonging to an arithmetic sequence \[6+9+12+\cdots + 48\] in sigma notation with summation index \(k\) and calculate it
| \(6+9+12+\cdots + 45+ 48 = {}\) |
| \(6+9+12+\cdots + 45+48 = {}\) |
Unlock full access
