Find the sum of the first 41 terms of the following series, to the nearest integer. 12, 19, 26, ...

The sum of the first 41 terms is 6232

Step-by-step explanation:

The sequence is an arithmetic progression with:

-- first term

--- common difference (this is calculated by 19 - 12 or 26 -19)

Required

The sum of the first 41 terms

This is calculated as:

In this case:

So:

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

3, 12, 48, 384, 1536, 6144, 24576, 98304

step-by-step explanation:

just keep timing it by 4.