If `a_(1),a_(2),a_(3),….` are in A.P., then `a_(p),a_(q),q_(r)` are in A.P. if p,q,r are in

If a_(1),a_(2),a_(3),…. are in A.P., then a_(p),a_(q),a_(r) are in A.P. if p,q,r are in

Let a_(1),a_(2),a_(3)... be in A.P.and a_(p),a_(q),a_(r) be in G.P.then value of (a_(q))/(a_(p)) is

Let a_(1),a_(2),a_(3),a_(4) and a_(5) be such that a_(1), a_(2) and a_(3) are in A.P. a_(2) ,a_(3) and a_(4) are in G.P and a_(3) ,a_(4) and a_(5) are in H.P . Then a_(1) ,a_(3) and a_(5) are in

If a_(1),a_(2),a_(3),………. are in A.P. such that a_(1) + a_(5) + a_(10) + a_(15) + a_(20) + a_(24) = 225, then a_(1) + a_(2) + a_(3) + …… a_(23) + a_(24) =

If a_(1),a_(2),a_(3),………. are in A.P. such that a_(1) + a_(5) + a_(10) + a_(15) + a_(20) + a_(24) = 225, then a_(1) + a_(2) + a_(3) + …… a_(23) + a_(24) =

If a_(1),a_(2),a_(3)............ are in A.P. such that a_(4)-a_(7),+a_(10)=m, then sum of 13 terms of this A.P., is;

If a_(1), a_(2), a_(3),…, a_(40) are in A.P. and a_(1) + a_(5) + a_(15) + a_(26) + a_(36) + a_(40) = 105 then sum of the A.P. series is-