Q. 245.0( 4 Votes )

If tn be the nth term of an A.P. such that find .

Answer :

Given:


To find:


We know that,


tn = a + (n – 1)d


So,




3(a+3d) = 2(a+6d)


3a + 9d = 2a + 12d


3a – 2a = 12d – 9d


a = 3d …(i)


Now, [from (i)]


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