Question

if the third term of an ap is 1 and 6th term is -11find the sum of its first 32term

Answer 1

sorry I can't do it.But next time I will help you

Answer 2

a+2d=1
a+5d=-11

-3d=12
d=-4
a=9
S32=32/2(2(9)+31(-4))
=16(18-124)
=16(-106)
=-1696