Question

The ratio of the 11th term to the 18th term of an AP is 2:3 . find the ratio of the 5th term to the 21st Tom and also the ratio of the sum of the first five terms to the sum of the first 21 terms ​

Answer 1

a+10d/a+17d=2/3

3a+30d=2a+51d

a=21d

we now I hope you can solve it

Answer 2

hope it helps to you!!!!!!

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