The sum of the series 5-10+20- ----------------------- to 6 terms is
104
- 106
105
- 105
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
If fifth term of a G.P. is 2, then the product of its first 9 terms is
256
512
1024
Find the value of k so that 8k+4, 6k-2 and 2k+7 will form an A.P.
6
7
7 1/2
6 1/2
Sum of infinite geometric series,
Which term of the series 5,8,11,............... is 320.
106
120
160
102
If three numbers a,b,c form a G.P., then
b2 = ac
b=a+c
b2 = a+c
Find the sum of 1+1/2+1/4+1/8+----------------------
1
2
3
4
7th term of 2,4,8, -------------------- is
118
125
128