Question

Find sn in which a=2,t6=486,n=6.

Answer 1

The answer is s6
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Answer 2

Answer:

a=2

l=486

n=6

Step-by-step explanation:

$for \: sum \: of \: n \: terms$

Sn=n/2(a+l)

or

Sn=n/2(2a+(n-1)d)..

.

so,

Sn=6/2(2+486)

=3×488

.

[Sn=1464]