) The sum of the first twenty-one
terms of a linear sequence (A. P.) is
28, and the sum of the...
Mathematics, 19.04.2021 01:20, babygirlqueen5588
) The sum of the first twenty-one
terms of a linear sequence (A. P.) is
28, and the sum of the first twenty-
eight terms is 21. Find which term of
the sequence is 0 and also the sum
of the terms preceding it.
Answers: 3
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