The first term of an A.P is -1, and the C.D is -3 then 12th term is __________.
34
32
-32
-34
The 7th term of H. P 4/3, 3/2, 12/7, ....... is ________.
36/14
48/21
4/5
4
The sum of the squares of first n natural numbers is _______.
If x, y, z are in A.P, then 2y = ?
x + z
x - z
x / z
xz
If a, b, c are in G. P, then which of the following is true?
a = bc
b2 = ac
c = ab
a2 = bc
The sum to n terms of 1, 8, 27, 64, ........ is ______.
The 10th term of the A.P 13, 8, 3, -2, ......... is _____________.
-57
-52
There are n arithmetic means between a and b. Then the common difference d is _________.
( b + a ) / ( n + 1 )
( n + 1 ) / ( b + a )
( b - a ) / ( n + 1 )
ab / ( n + 1)
The sum of the series 1 + 1/2 + 1/22 + .......... is __________.
1
1/2
2
None of these
The 7th term of the series 1, -1/2, 1/4, ........ is ______.
-1/8
1/16
-1/32
1/64
