Question

Please help
It's urgent
If 7th term of a ap is equal to 11/7 times of 11 term. find 18th term.

Please help
It's urgent​

Answer 1

Answer:

I have given two solution of your question in two methods.

Step-by-step explanation:

hope it help you please mark me as brainliest.

Answer 2

Answer:

A(18)=0

Step-by-step explanation:

Given:

A(7)=11/7 times of A(11)

A(18)=?

let the 7th term be (a+6d)

let the 11th term be (a+10d)

NOW, ATQ:

7(a+6d)=11(a+10d)

7a+42d=11a+110d

7a-11a=110d-42d

-4a= 68d

-a= 17d -------(I)

Now,

A(18)=(a+17d) {from eq (I)}

A(18)=a+(-a)

A(18)=0

hence, the A(18) is 0.

hope it helps :)