Question # 1

Sequence also called..............

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Series

Function

progressions

Elements

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1, 1/2, 0

1, 2, 1

1, 2, 3

1, 2, 0

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, 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

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A.P.

G.P.

H.P.

None of these

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The sum of all 2 digit number is

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4750

3776

4895

4905

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2²- n - 1

1 - 2^-n

n + 2^-n-1

2ⁿ- 1

pth term of an H.P. is qr and qth term is pr then the rth term of the H.P. is

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pqr

1

pq

pqr²

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

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A sequence whose reciprocal is an A.P is called

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Oscillator

H.P

G.P

None of these

The series obtained by adding the terms of an arithmetic sequence is called the

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Infinite series

Harmonic series

Geometric series

Arithmetic series

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

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

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Which term of the A.P 5,8,11,24.............is 320

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104th

106th

105th

64th

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

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400

397

404

408

Find the sum of the infinite geometric series 2 + 1 + 0.5 + ....

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3.5

3

4

None of these

The 6th term of an arithmetic sequence whose first term is 3 and common difference in zero is

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18

6

3

0

The common ration of a geometric sequence cannot be

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0

1

2

3

In an A.P,a +(n-a)d is

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1st term

General term

Last term

None of these

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

How many term are there in the A.P, in which a₁ = 11 , a_n =68, d=3

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30

27

20

21

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

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1

0

-1

-2

If a₁= 3, r = 2, then the nth term of the G.P. is

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2.3^n-1

3.2ⁿ

3.2ⁿ⁺¹

3.2^n-1

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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Sum of n terms of a geometric series if | r | < 1 is

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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

If x,y are two -ve distinct numbers then

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A>G>H

A<G<H

A=G=H

None of these

The element range of sequence are called

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Series

progression

Members

Terms

A number A is called the arithmetic mean between a and b if a, A, b is ______

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Arithmetic sequence

Geometric sequence

Harmonic sequence

Arithmetic sequence

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

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3

-4

7

1

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an A.P.

a G.P.

a H.P.

None of these

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2

-3/2

1

0

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

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

If x,y are two positive distinct numbers then

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A>G>H

A<G<H

A=G=H

None of these

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