Question

in an arithmatic progression the first term is 3 the last term is 27 the fifth term from the first and the fifth term from the last are same then the common difference is
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Answer 1

$answer - \\ a1 = 3 \\ l = 27 \\ \\ a5 = 3 + 4d \\ 5 \: th \: term \: from \: last \: = \: l - (n - 1) \: d \\ \\ 27 - 4d \: = \: 3 + 4d \\ 24 \: = \: 8d \\ d \: = \: 3$

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