In an AP, lf a =-10, n=6 and `a_n=10`, then find the value of d.

If in an AP a=15, d=-3 and a_n=0 . Then find the value of n.

In an A.P. if a = – 7.2, d = 3.6, a_n = 7.2, then find the value of n.

Consider the sequence defined by a_n=a n^2+b n+c dot If a_1=1,a_2=5,a n da_3=11 , then find the value of a_(10)dot

If for an A.P., a= 10.5 , d= 0 , dn = 101, then what is the value of t_(n) ?

Consider the sequence defined by a_n=a n^2+b n+cdot If a_1=1,a_2=5,a n da_3=11 , then find the value of a_(10)dot

In an AP :- given a = 8, a_n = 62. S_n =210, find n and d .

Let alpha and beta be the roots of the equation x^2-6x-2=0 If a_n=alpha^n-beta^n for ngt=0 then find the value of (a_10-2a_8)/(2a_9)

If n (A ) = 10 ,n(B ) = 6 and AcapBnephi then maximum value of n (B-A) ….. .

For a sequence, if S_(n)=(n)/(n+1) then find the value of S_(10) .

In an AP: given a=8, a_n=62,S_n=210 find n and d