If `{t_n}` is n A.p. such that `t_4/t_1= 2/3`, find `t_8/t_9.`

For an A.P, show that t_(m)+t_(2n)+m=2t_(m+n)

In an AP , it s being given that T_(4)/T_(7) = 2/3 . " Find " T_(7)/T_(10)

Let {t_(n)} is an A.P If t_(1) = 20 , t_(p) = q , t_(q) = p , find the value of m such that sum of the first m terms of the A.P is zero .

If in an A.P. {t_(n)} , it is given that t_(p) =q and t_(q) =p then : t_(p+q)= cdots

For an A.P. if t_(4)=20 and t_(7)=32 , find a,d and t_(n) .

For an A.P., show that t_(m) + t_(2n + m) = 2t_( m + n)

If T_n = 3n +8 , then T_(n-1) = ________.

In an A.P. if a=2, t_(n)=34 ,S_(n) =90 , then n=

If in an A.P. {t_(n)} , it is given that p. t_(p)=q.t_(q) then : t_(p+q)= cdots

The fifth term of the sequence for which t_1= 1, t_2 = 2 and t_(n + 2) = t_n + t_(n + 1) is