[" 18.The terms "a_(1),a_(2),a_(3)" form an arithmetic "],[" sequence whose sum is "18." The terms "],[a_(1)+1,a_(2),a_(3)+2," in that order,form "a],[" geometric sequence.Then the sum of the all "],[" possible common difference of the A.P.is "]

The terms a_(1),a_(2),a_(3) from an arithmetic sequence whose sum s 18 .The term a a_(1)+1,a_(2),a_(3),+2, in that order,form a geometric sequence.Then the absolute value of the sum of all possible common difference of the A.P.is

The numbers a_(1),a_(2),a_(3),…….. form an arithmetic sequence with a_(1)nea_(2) . The three numbers a_(1),a_(2) and a_(6) form a geometric sequence in that order. Then the common difference of the arithmetic sequence is

The sixth term of an A.P.,a_(1),a_(2),a_(3),.........,a_(n) is 2. If the quantity a_(1)a_(4)a_(5), is minimum then then the common difference of the A.P.

If a_(n) is a geometric sequence with a_(1)=2 and a_(5)=18, then the value of a_(1)+a_(3)+a_(5)+a_(7) is equal to

let be an arithmetic sequence whose first term is 1 and be a geometric sequence whose first term is 2 is the common ratio of geometric sequence is haft the common difference of arithmetic sequence the minimum value of (a_(4)b_(1)+a_(3)b_(2)+2a_(1)b_(1))

If a_(1),a_(2),a_(3),.. from a G.P. with common ratio r, find in terms of r and a_(1) the sum of a_(1)a_(2)+a_(2)a_(3)+...+a_(n)+a_(n+1)

If terms a_(1),a_(2),a_(3)...,a_(50) are in A.P and a_(6)=2, then the value of common difference at which maximum value of a_(1)a_(4)a_(5) occur is

If a_(1), a_(2), a_(3) ,... are in AP such that a_(1) + a_(7) + a_(16) = 40 , then the sum of the first 15 terms of this AP is

If a_(1), a_(2), a_(3) ,... are in AP such that a_(1) + a_(7) + a_(16) = 40 , then the sum of the first 15 terms of this AP is

If a_(1), a_(2), a_(3) ,... are in AP such that a_(1) + a_(7) + a_(16) = 40 , then the sum of the first 15 terms of this AP is