Question

In an AP three times of 3rd term is equal to eight times of 8th term then find 11th term of it

Answer 1

Answer:

The 11th term will be 0

This is actually an identity in A.P

If n times the nth term is equal to m times the mth term them (m=n)th term will be 0

3(a+2d)=8(a+7d)

on simplifying

a=-10d

11th term=a+10d= -10d+10d=0.

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