If the sum of 8th and 9th terms of
an arahmetic progression is 72 and
the 4th term is - 6 Find...
Mathematics, 21.12.2020 17:50 noglapotato
If the sum of 8th and 9th terms of
an arahmetic progression is 72 and
the 4th term is - 6 Find the common
difference
Answers: 1
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