If `10,8,6...`are in A.P and `t_(n)=-28` then n=

If x, y, z are in A.P. and t a n^(-1)x ,""t a n^(-1)y""a n d""t a n^(-1)z are also in A.P., then (1) 2x""=""3y""=""6z (2) 6x""=""3y""=""2z (3) 6x""=""4y""=""3z (4) x""=""y""=""z

If for an A.P. t_(24) -t_(17) = - 28 , then what is the common difference ?

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

Let S_(n) denote the sum of the first n terms of an A.P.. If S_(4)=16 and S_(6)=-48 , then (S_(10))/(-80) is equal to ____________.

Let S_(n) denote the sum of the first n terms of an A.P.. If S_(4)=16 and S_(6)=-48, then S_(10) is equal to :

For an A.p.,if a =8, d=-2, then t_(17) =

In an AP,If a =-10,n=6 and a_(n)=10, then find the value of d.

If it,be the n^(th) term of an A.P and if t_(7)=9 then the value of the c.d.that would make t_(1)t_(2)t_(7), least is