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 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
Which terms of the G.P 2, 2√2, 4,........ is 128?
12
13
14
15
The nth term of G.P 5, 25, 125 is
5n
5n-1
5n+1
n5
The first 3 terms of the sequence an = n+1/n+2 is
5/4, 4/3, 3/2
2/3, 3/4, 4/5
4/5, 3/4, 2/3
4, 3, 2
The number of terms of the A.P 3, 7, 11, 15--- to be take so that the sum is 406
5
10
How many terms of the G.P 3, 32, 33,...... are needed to give the sum 120?
4
6
18
Which term of the G.P, 2, 8, 32.......... up to n term is 131072?
8th term
9th term
7th term
6thterm
If m, p, q are consecutive terms in an A.P, then P is
mq/2
m - q/2
m2+q2/2
m + q/2
1 + 2 + 3 +........30 =
465
930
900
500
