Question # 1

For an A.P common difference d

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Can be zero

May or may not zero

Cannot be zero

None of these

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The 10th common term between the series 3+7+11+....... and 1 + 6 +11 + ....... is

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191

193

211

None of these

An A.P., a G.P. and a H.P. have the same first and last terms and the same odd numbers of terms, the middle terms of the three series are in

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A.P.

G.P.

H.P.

None of these

The fifth term of an A.P. Whose first term is 5 and common difference is 3,is

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20

17

25

30

If a^x= b^y= c^zand a, b, c are in G.P. then x, y, z are in

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A.P.

G.P.

H.P.

None of these

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If a, b, c, d, e, f are in A.P.,then e-c is equal to

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2(c - a)

2(f - d)

2(d - c)

d - c

If a₁= a₂= 2, a_n= a_n-1- 1 (n > 2), then a₅is

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1

0

-1

-2

The consecutive terms of a progressions are 30, 24, 20. The next term of the progression is

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The numbers of G₁, G₂, G₃...... G_nare called n geometric means between a and b is a, G₁, G_2,G₃, ... G_n, b are in

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H.P.

A.P.

G.P.

None of these

If S_rdenotes the sum of the first r terms of a G.P., then S_n, S_2n- S_n, S_3n- S_2nare in

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A.P.

G.P.

H.P.

None of these

The sixth term of the sequence 1,3,12,60....is

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1500

72

2160

2520

If the pth, qth, and rth terms of an A.P. are in G.P:., then the common ratio of the G.P. is

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The sum of indicated terms of a sequence is called

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Arithmetic series

Series

Harmonic series

None of these

5th term of a G.P. is 2, then the product of first 9 terms is

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256

128

512

None of these

The number of divisors of 1029, 1547 and 122 are in

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A.P.

G.P.

H.P.

None of these

-2, 1, 4, 7,.... is ______

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Harmonic sequence

Arithmetic sequence

Geometric sequence

Arithmetic series

Find the next two terms of 7, 9, 12, 16,...

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18, 20

19, 22

20, 25

21, 27

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2

-3/2

1

0

A sequence is a functions whose domain is a subset of the set of

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Natural numbers

Real numbers

Whole numbers

Rational numbers

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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The 6th term of the sequence 7,9,12,16......is

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27

32

20

19

The general term of the A.P. is

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a₁+ (n - 1) d

n + (a₁- 1) d

d + (n - 1) a₁

None of these

Let the sequence 1, 2, 2, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, ..... where n consecutive terms have the value n, then 1025th term is

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2⁹

2¹⁰

2¹¹

2⁸

A sequence of number whose reciprocals form an arithmetic sequence is called

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Geometric sequence

Arithmetic series

Harmonic sequence

Harmonic series

G is geometric mean between a and b if a, G, b is

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A.P.

G.P.

H.P.

None of these

A sequence whose reciprocal is an A.P is called

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Oscillator

H.P

G.P

None of these

An A.P. consists of n(odd terms) and its middle term is m. then the sum of the A.P. is

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2 mn

1/2 mn

mn

mn²

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

The sum of first twenty odd integers in A.P is

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400

397

404

408

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