# Determine the sum of the first 100 numbers. (arithmetic sequence)?

In an arithmetic sequence, the first three numbers are 100, 96 and 92.

Determine the sum of the first 100 numbers.

I only know that the answer is -9800, can someone show how I can get this answer?

Determine the sum of the first 100 numbers.

I only know that the answer is -9800, can someone show how I can get this answer?

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