The 8th term of an Ap is zero prove that it's 38 the term is triple of it's 20th term.
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Step-by-step explanation:
There is some mistake in ques..it should be 18th term in place of 20th term..
Given :- a8=0
a+7d= 0
a= -7d
38th term = a+ 37d
= -7d + 37d ( bcoz a=-7d)
= 30d
18th term= a+17d
= -7d+ 17d
= 10d
so 38th term is triple of 18 th term..
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