Question

Find the sum of the following series...?

Answer 1

@peachpi can you help me with this one as well?

Answer 2

put n=1,2,3,......12
get the series
3,5,7,9.............25
here in every term 2 is add and total 12 terms
this is AP series
sum of A P =n/2(a+l)
where n is number of terms ,a is first term ,l is last term

Answer 3

i'm not sure i understand

Answer 4

what is the next step?

Answer 5

n=12
a=3
l=25
sum=(12/2)(1+25)
=6*26=ans

Answer 6

oh ok thnk you