" Whin w' if d "-4n-7" and "a_(0)=4" then a is equal to "

In an AP, if d = -4, n = 7 and a_(n) = 4, then a is equal to

In an AP, if d = -4, n = 7 and a_(n) = 4, then a is equal to

In an AP if d=4,n=7,a_(n)=4 then a is

If the sequence (a_(n)) is in GP, such that a_(4)//a_(6)=1//4 and a_(2)+a_(5)=216, then a_(1) is equal to

If the sequence (a_(n)) is in GP, such that a_(4)//a_(6)=1//4 and a_(2)+a_(5)=216, then a_(1) is equal to

Let a_(1),a_(2),a_(3),?a_(10) are in G.P.if (a_(3))/(a_(1))=25 then (a_(9))/(a_(5)) is equal to (A)5^(4)(B)4.5^(4)(C)4.5^(3)(D)5^(3)

If a_(1), a_(2), a_(3), ……. , a_(n) are in A.P. and a_(1) = 0 , then the value of (a_(3)/a_(2) + a_(4)/a_(3) + .... + a_(n)/a_(n - 1)) - a_(2)(1/a_(2) + 1/a_(3) + .... + 1/a_(n - 2)) is equal to

Let A be the set of 4 -digit numbers a_(1)a_(2)a_(3)a_(4) where a_(1)>a_(2)>a_(3)>a_(4), then n(A) is equal to

Let A be the set of 4-digit numbers a_(1)a_(2)a_(3)a_(4) where a_(1)gta_(2)gta_(3)gta_(4) then n(A) is equal to