If -2/7, x, -7/2 are in G.P, then x =
1
-1
± 1
None of these
The 10th term of an A.P is 52 and 16th terms is 82. Then the 32nd term is
162
165
173
1 + 2 + 3 +........30 =
465
930
900
500
How many terms of the G.P 3, 32, 33,...... are needed to give the sum 120?
4
5
6
18
The value of 112 + 122 + .....202 is
3845
2485
2470
3255
Which terms of the G.P 2, 2√2, 4,........ is 128?
12
14
13
15
Sum of the sequence 9, 99, 999, 9999 up to n terms is
(10n -1) - n
9/10 (10n - 1) - n
10/9 (10n - 1) - n
10th term of an A.P is 52, 16th term is 82 then tn will be
n + 2
5n - 2
5n + 2
5n
If the sum of 3 numbers in A.P is 24 and their product is 440, then the numbers are
5, 8, 11
6, 9, 12
7, 10, 13
4, 8, 12
How many terms of the G.P 3, 3/2, 3/4......... are needed to give the sum 3069/512?
10
11
9
8
