KEAM 2014 Math Paper

Given, x1,x2,...,xn are in AP. and
We know that in an AP, the sum of the terms equidistant from the beginning and end is always same and is equal to the sum of first and last term i.e.
If an AP consists of 30 terms, then
From Eq.(i).
⇒4(x1+x30)=272
⇒‌‌x1+x30=‌

272

4

=68