Mathematics
The sum of the first 14 terms of an A.P. is 1505 and its first term is 10. Find its 25th term.
Related Questions
If the 4th, 10th and 16th terms of a G.P. are x, y and z respectively, prove that x, y, z are in G.P.
15, 30, 60, 120 …… are in G.P. (Geometric Progression).
(a) Find the nth term of this G.P. in terms of n.
(b) How many terms of the above G.P. will give the sum 945 ?
The roots of the equation (q - r)x2 + (r - p)x + (p - q) = 0 are equal.
Prove that : 2q = p + r, that is, p, q and r are in A.P.