If -2/7, x, -7/2 are in G.P, then x =
1
-1
± 1
None of these
There are 15 terms in an A.P. Its first term is 5 and common difference is 3, then its middle term is
8
26
29
9
If the sum of n terms of an A.P is (Pn + qn2) where p and q are constants. Then the common difference is
2 + q
2q
2/q
2 - q
How many terms of the G.P 3, 32, 33,...... are needed to give the sum 120?
4
5
6
18
In an Asoka chakra, the central angle made by the smallest sector,two small sectors, three small sectors and so on are
in A.P
Equal
in G.P
Such that their summation is 360o
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
Common ratio of G.P am-n, am, am+n.........is
am
a-m
an
a-n
If the third term of a G.P is 10, then the product of first 5 terms is
101
50
510
105
The nth term of G.P 5, 25, 125 is
5n
5n-1
5n+1
n5
The 10th term from the end of the A.P 4, 9, 14........254 is
204
-209
209
214
