Sum of infinite geometric series,
The sum of 101+99+97+------------+47 is
2012
2072
1072
1015
If a,x,b are in A.P., then x =
a+b
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
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
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
The sum of 10 terms of 5+8+11+ ----------
165
170
185
The second term of a G.P. is 18 and the fifth term is 486. Find the first term
3
2
4
