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Examples
1. Express the sum of first 100 terms of the sequence
{𝑎𝑛} where 𝑎𝑛 =1
𝑛for n=1, 2, 3, ….
2. What is the value of 𝑗=15 𝑗2
3. What is the value of 𝑘=48 −1 𝑘
Examples
𝑖=1
4
𝑗=1
3
𝑖𝑗 =
𝑖=1
4
𝑖(1 + 2 + 3)
Example
𝑘=50
100
𝑘2