The formula for nth term of an arithmetic progression is Tn =
a+nd
a+(n-1)d
2a+(n-1)d
If in a G.P. consisting of positive terms, each term equals the sum of the next two terms. Then the common ratio of this progression equals
26
27
28
None of these
7th term of 2,4,8, -------------------- is
120
118
125
128
The sum of the series 5-10+20- ----------------------- to 6 terms is
104
- 106
105
- 105
The A.M. between 5 and 22 is
13
14
13.5
14.5
The harmonic mean of two numbers is 4 and the arithmetic and geometric means satisfy the relation , the numbers are
6,3
5,4
-3,1
The second term of a G.P. is 18 and the fifth term is 486. Find the first term
3
6
2
4
The sum of 101+99+97+------------+47 is
2012
2072
1072
1015
Sum of infinite geometric series,
