Question

if 10 times of the 10th term is equal to 20 times of its 20th term of an ap find its 30th term​

Answer 1

Let a and d be the first term and common difference of the given AP

$a_{10}=a+9d$

$a_{20}=a+19d$

$10(a+9d)=20(a+19d)$

$a+9d=2a+38d$

$a+29d=0$

$a+(30-1)d=0$

This is of the form $a+(n-1)d$

where n=30

Hence $30^{th}$ term is 0

HOPE IT HELPS!!

Answer 2

Answer:

Hey Buddy here's ur answer