If `a_(n)` denotes the nth term of the AP 3, 18, 13, 18,… then what is the value of `(a_(30)-a_(20))?`

If a_(n) denotes the nth term of the AP 2, 7, 12, 17,…., find the value of (a_(30)-a_(20))

In the sequence a_(n) the nth term is defined as (a_(n-1) - 1)^(2) . If a_(3) = 64 , then what is the value of a_(2) ?

If a_(n)=3n+4 is the nth term of an AP then find the first four terms

If a_(n) represents the nth term of the sequence 45, 18, 6, …, and a_(1) represents the first term, then a_(n)=

Let a_(n) denote the n-th term of an A.P. and p and q be two positive integers with p lt q . If a_(p+1) + a_(p+2) + a_(p+3)+…+a_(q) = 0 find the sum of first (p+q) terms of the A.P.

In a sequence, the n^(th) term a_(n) is defined by the rule (a_(n-1) - 3)^(2), a_(1) = 1 what is the value of a_(4) ?

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

If the common difference of an AP is 10, then what is a_(18) - a_(16) ?

If a_(n) be the n^(th) term of an AP and if a_(1) = 2 , then the value of the common difference that would make a_(1) a_(2) a_(3) minimum is _________