[" 4.In an A.P.if "d=-4,n=7,a_(n)=4," then "a" is; "],[[" (a) "6," (b) "7],[" (c) "20," (b) "28]]

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

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 a_(n) = (5n-3)/(4) , then a_(7) = ………..

In an A.P: given a_(n) = 4 , d = 2 , S_(n) = -14 , find n and a .

a_(n) = 9-5n, a_(4) = ………….

If a_(n) = 3-4n , then what is a_(1)+a_(2)+a_(3)+…+a_(n) equal to ?

In an A.P.if first term is 4,9^(th) term is 20 then 15^(th) term is

If lt a_(n) gt is an A.P. and a_(1) + a_(4) + a_(7) + "………." + a_(16)= 147 , then a_(1) + a_(6) + a_(11) + a_(16) equals :

In an A.P.if first term is 4, gth term is20,then 15 th term is