If -2/7, x, -7/2 are in G.P, then x =
1
-1
± 1
None of these
Common ratio of G.P am-n, am, am+n.........is
am
a-m
an
a-n
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
nth term of the following sequence ak, ak3, ak5.......is
akn
ak2n-1
ak2n
akn+1
1 + 2 + 3 +........30 =
465
930
900
500
If in A.P Sn = Pn2 and Sm= pm2 where S denotes the sum of r terms of the A.P then Sp is equal to
1/2 p3
mnp
p3
(m+n)p2
Find the 5th term in the sequence a1 = 3, a2 = 3 and an = an-1 + an-2 ; a>2
6
9
15
24
The sum (m + n)th term and (m - n)th terms of an A.P is equal to twice the
nthterm
mthterm
(m - 1)term
n + 1 term
Which term of the A.P -1, 3, 7, 11........is 91?
25th term
91th term
100th term
24th term
How many terms are in the sequence 5, 8, 11..........47?
47
16
20