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Question

find the sum of the first 12th terms of the sequence 8, 5, 2 ......
7 years ago

Answers

Scott
the difference (d) is -3

so the 12th term is ... 8 + 11(-3) = -25

the 1st and last terms (just like all the other "pairs") sum to -17

6 * -17 = ?
7 years ago

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