Question # 1

If a_n= 2n -3, write the first four terms

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-3, -1, 1, 3

1, 3, 5, 7

-1, 1, 3, 5

None of these

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

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27

32

20

19

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

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A.P

Real Sequence

G.P

None of these

A sequence having no last term is called

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arithmetic sequence

Geometric sequence

Finite sequence

Infinite sequence

A,G,H are in

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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

The fifth term of the sequence a_n= 2n + 3 is ______

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13

-13

8

3

The 31 term of the A.P 5,2,-1.....is

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-82

82

85

-85

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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 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

1,1/3,1/5,1/7,1/9..... is a

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geometric sequence

finite sequence

infinite sequence

arithmetic series

an - an-1 will be common difference in an A.P if

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n = 1∀n∈ N

n>1∧n∈N

n∈Z

None of the above

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

The seventh term of an A.P whose first term is P and common difference is q. is

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P-6q

P+6q

P-4q

P-nq

3, 6, 12,.... is

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A.P

G.P.

H.P.

None of these

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

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

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24

31

26

23

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

Find the geometric mean between 4 and 16

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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 difference of two consecutive terms of an A.P. is called ______

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General term

Common ratio

Common difference

None of these

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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If a₁, r are first term and the common ratio respectively then the sum of an infinite geometric series is

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A Geometric Series is divergent only if

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|r|>1

|r|≥1

|r|=1

None of these

If #n = (n-5)2 + 5, then find #3 x #4.

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54

12

4

9

H.M. between 3 and 7 is

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If 6th term of a series in A.P, is -2 and 8th term is -8, the first term of the serie is

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13

-13

18

-10

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

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A.P.

G.P.

H.P.

None of these

No term of a harmonic sequence can be

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0

1

2

3

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