[" 5.The common difference of the A.P whose "a_(n)=-3n+7" is (1) "],[" a."3]

The common difference of an A.P. 6, then a_(15) - a_(11) …….. .

The common difference of an A.P. 6, then a_(15) - a_(11) …….. .

Write the common difference of an A.P.whose nth term is a_(n)=3n+7.

The common difference of an A.P. for which a_(18)-a_(14) = 32 is …….

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

Let the sum of the first n terms of a non-constant A.P., a_(1), a_(2), a_(3),... " be " 50n + (n (n -7))/(2)A , where A is a constant. If d is the common difference of this A.P., then the ordered pair (d, a_(50)) is equal to

Let the sum of the first n terms of a non-constant A.P., a_(1), a_(2), a_(3),... " be " 50n + (n (n -7))/(2)A , where A is a constant. If d is the common difference of this A.P., then the ordered pair (d, a_(50)) is equal to

If a_(1), a_(2), a_(3),….a_(n) be an A.P with common difference d, then sec a_(1) sec a_(2) + sec a_(2) sec a_(3) + …+ sec a_(n-1) sec a_(n) =

a_(28)-a_(23) = 15 , then the common difference of the A.P. is

In an A.P. given that the first term (a) = 54, the common difference (d) = -3 and the n^(th) term (a_(n))=0 , find n and the sum of first n terms (S_(n)) of the A.P.