Question

What is formula for sum of A.P and last term ?

Answer 1

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The Sum formula for A.P

Sn =
$\frac{n}{2} \times (2a + (n - 1)d)$
And last term = a + (n-1)D

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Answer 2

$\underline{\underline{\Huge\mathfrak{Answer ;}}}$

$<b>The Sum Formula For A.P. ;-</b>$

$= > sn = \frac{n}{2} \times (2a + (n - 1)d)$

And for the $<b>last terms ;-</b>$

$= > a + (n - 1)d$

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