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8 questions
The 9th term of the G.P 1, 4, 16, 64,... is
48
49
47
410
In a GP the 3rd term is 24 and the 6th term is 192. The 10th term is
3070
3072
3068
3074
The sum of 7 terms of the G.P 3, 6, 12, ... is
380
381
382
379
The sum of some terms of a G.P is 315 whose first term and the common ratio are 5 and 2, respectively. The number of terms are
3
4
5
6
The two geometric means between the numbers 1 and 64 are
1 and 64
4 and 16
2 and 16
8 and 16
The nth term of a G.P is 128 and the sum of its n terms is 225. If its common ratio is 2, then its first term is
1
3
8
none of these.
If p, q be two A.M's and G be one G.M between two numbers, then G2 =
(2p−q)(p−2q)
(2p−q)(2q−p)
(2p−q)(p+2q)
none of these
If a, b, c are in G.P and x, y are A.M's between a, b and b, c respectively, then
x1+y1=2
x1+y1=21
x1+y1=a2
x1+y1=b2
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