If log 2, log (2n -1 ) and log (2n + 3 ) are in AP, then n is equal to
5/2
log 25
log 35
3/2
The nthe term of the sequence 1/2, 1/6, 1/12, - - - - - is
If progressions 3, 10, 17, .. . . . . and 63,65, 67, . . . . . . are such that their nth terms are equal, then n is equal to :
13
15
9
8
The two geometric means between 1 and 64 are.
1 and 64
8 and 16
4 and 16
3 and 16
Let a, b, c be A.P then 1/c, b/ac, 1/a are in ________.
G.P
A . P
H. P
None of these
The A. M of two numbers is 34 and G.M is 16, the numbers are ________.
2 and 64
64 and 3
64 and 4
0
1
-1
10
5th term of a G.P is 2, then the product of first 9 terms is _________.
256
128
512
If a and b are two dfferent positive real numbers, then which of the following relations is true ?
2 √ab > ( a + b )
2 √ab < ( a + b )
2 √ab = ( a + b )
If a, b, c are in A.P, then 3a, 3b, 3c are in.
A.P
H.P
