Q24 of 176 Page 8

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

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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