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
The 10th term of an A.P is 52 and 16th terms is 82. Then the 32nd term is
162
165
173
None of these
Given an = (n+1)2/n then a7 is
64
67
49/8
64/7
Which term of the G.P, 2, 8, 32.......... up to n term is 131072?
8th term
9th term
7th term
6thterm
The A.M between pth and qth terms of an A.P is equal to the AM between rth and sth terms of the A.P. Then p+q =
r + s
r - s/r + s
r + s/r - s
r + s + 1
If -2/7, x, -7/2 are in G.P, then x =
1
-1
± 1
If G is geometric mean of numbers a and b then G =
√ab
±√ab
ab
a/b
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
The number of terms in the A.P 7, 13, 19.......97 is
97
17
16
15
