Question

Find the sum of two middle term of the ap -4/3,-1,-2/3,-1/3,.........,4 1/3

Answer 1

Answer:

we have an= a+(n-1)d = 13/3 or -4/3+(n-1)×1/3=13/3 or (n-1)×1/3=13/3+4/3 or n-1=17/3×3/1=17 or n=17-1=16 so A8+A9= -4/3+7/3+(-4/3+8/3)=7/3...