Question

solve this full question paper
I will mark as brainlist
I will follow also
okk please do it fast​

Answer 1

Answer:

9)A2=13,A4=3

a+d=13

a+3d=3

by elimination method,

d=-5,a=18,A3=a+2d=28

10)an=5+2n

A1=5+2=7

A2=5+4=9

d=2,a=7

s15=n/2(2a+(n-1)d)

=15/2(14-28)

=15/2(42)

=15.21

=315

I hope my answer will help you.