# Find the sum of a given arithmetic sequence: sum n=1 100 (6 - 12 n)

Find the sum of a given arithmetic sequence:
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d2saint0
Formula used:
a)
b)
Calculation:
In order to find the sum of an arithmetic sequence, you need

Write as follows,

Now to find
Substitute the values of n in equation (b).
We get,

$=600$
Now to find the
Substitute the values of n in equation (a).
We get,

$=2525$
Then,

Hence
Jeffrey Jordon