if the 7th term is 49 and 17 th term is 289 in an AP find the first term and common difference
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Answered by
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7 th term is 49
17 th term is 289
289-49÷17-7=
240÷10= 24
then
24 is the common difference
1term =24-23×d
=1×24
= 24
then the sequence is 24,48,72......
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