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Arithmetic Progression

The expressio...

Question

The expression for $n^{t h}$ term of an AP, with first term $a$ and common difference $d$ , is

$d n + (a - d)$

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$d n + (a + d)$

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$d (n + 1) + a$

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$d (n - 1) - a$

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Solution

The correct option is A
$d n + (a - d)$

The expression for $n^{t h}$ term of an AP is
$a_{n} = a + (n - 1) d$
$a_{n} = a + n d - d$
$a_{n} = d n + (a - d)$

Suggest Corrections

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