Question # 1

1/2,1/3,1/4,1/5.........is

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a geometric sec

an arithmetric series

finite sequence

an infinite sequece

The series obtained by adding the terms of a geometric sequence is called

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Infinite series

Arithmetic series

Geometric series

Harmonic series

if a₁ =3, d=7 and a_n =59 , then the number of terms in A.P is

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7

9

11

13

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12

13

14

15

Which one represents a sequence

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an

Sn

a(n)

{an}

The third term of a G.P. is the square of first term. If the second term is 8, then the 6th term is

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120

124

128

132

If all members of a sequence are real numbers then it is called a

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Series

Function

Real sequence

Range

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2

-3/2

1

0

If A, G, H are the arithmetic, geometric and harmonic means between a and b respectively then A, G, H are in

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A. P.

G. P.

H. P.

None of these

If a, b, c are in AP., a, b, c are in G.P. then A, m²b, c are in

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A.P.

G.P.

H.P.

None of these

If G is a G.M between a and b then a,G,b are in

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A.P

H.P

G.P

None of these

3, 6, 12,.... is

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A.P

G.P.

H.P.

None of these

H₁, H₂, H₃, .... H_nare called n harmonic means between a and b if a, H₁, H₂, H₃, ... H_nb are in

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H.P.

G.P.

A.P.

None of these

The third term of a G.P. is 4, The product of first five terms is

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43

45

46

None of these

The 7th term of the A.P 7,11,15,is

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24

31

26

23

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15/23

7/15

7/8

15/7

If 5,7 and 9 are A.Ms between a and b, then a and b is equal to

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2 and 12

1 and 10

3 and 11

-7 and 2

If x, y, z are the pth, qth, rth terms of an A.P. and also of G.P., then x^y-z. y^z-x. z^x-yeqals

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xyz

0

1

None of these

If a, b, c are in A.P., then 3^a, 3^b, 3^care in

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A.P.

G.P.

H.P.

None of these

1 + 2 + 3 + ...... + n = ______

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Arithmetic mean between x - 3 and x + 5 is

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x + 1

x + 2

x + 3

x + 4

A,G,H are in

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A.P

G.P

H.P

None of these

An infinite arithmetic series is always

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Convergent

Oscillatory

Divergent

None of these

How many numbers are there between 103 and 750 which are divisible by 6

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125

107

108

113

Write the first four terms of the arithmetic sequence 5, 2, -1, ... is

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3

-4

7

1

If three unequal numbers p, q, r are in H.P. and their squares are in A.P., then the ration p : q : r is

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Arithmetic mean between a and b is

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The sum of an infinite geometric series exist if

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| r | < 1

| r | > 1

r = 1

r = -1

A Geometric Series is divergent only if

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|r|>1

|r|≥1

|r|=1

None of these

Sum of first n terms of an arithmetic series is

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H.M. between 3 and 7 is

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