If the variance of the terms in an increasing `A.P., b_(1),b_(2), b_(3), ...,b_(11)` is 90, then the common difference of this A.P. is ______

If n^(th) term of A.P is 2n+3, then common difference is

If a,b,c are distinct positive real numbers in G.P and log _(c)a,log_(b)c,log_(a)b are in A.P,then find the common difference of this A.P

If a,b,c are in G.P and a,p,q are in A.P such that 2a, b+p, c +q are in G.P ., then the common difference of A.P is

The 8^(th) term of an A.P is 17 and its 14^(th) term is 29 . The common difference of the A.P. is

If for each n in N, S_(n)=nA+(1)/(2)n(n+1) B is sum of the first n terms of an A.P., the common difference of the A.P. is

If the n^(th) term of A.P. is (3+n)/(4) , then find the common different of A.P.

Let a_1,a_2,....a11 are in incresing A.P.and if varience of these number is 90 then value of common difference of A.P. is.

If the first term of an A.P. is 3 and the sum of its first 25 terms is equal to the sum of its next 15 terms, then the common difference of this A.P. is:

The common difference of the AP b_(1), b_(2) ……,b_(m) is 2 more than the common differece of A.P a_(1),a_(2),…….,a_(n) . If a_(40) = - 159 , a_(100) = - 399 and b_(100) = a_(70) , then b_(1) is equal to :

If the first term of an A.P. is a and n t h term is b , then its common difference is