In an `A.P. t_7 =15` then the value of common differenced that would make `t_2 t_7t_12` greatest is

If a_n be the term of an A.P. and if a_7=15 , then the value of the common difference that could makes a_2a_7a_12 greatest is:

If a_(n) be the term of an A.P. and if a_(7)=15 , then the value of the common difference that could makes a_(2)a_(7)a_(11) greatest is:

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

For an A.P. , t_(3)=7 and t_(4)=3, Find the common difference and the first term.

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

For an A.P., t_( 1) = 25 and t_(20) = 405 . Find the common difference.

Write the common difference of an A.P. whose n t h term is a_n=3n+7 .

In an A.P. with first term 'a' and common difference 'd' t_(2n) - t_(n) is : (where t_(n) " is the " n^(th) term )

If for an A.P., d=20, what is the value of t_6-t_2?