Question # 1

What is the general term of the geometric sequence -1, 1, -1, 1 ....... ?

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(-1)ⁿ

(1)ⁿ

(-1)^n-1

none of these

A function whose domain is the set of natural numbers is called the:

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series

sequence

means

convergent

If a_n-1 = 2n - 3 then a_n+1 =

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2n - 1

2n + 1

2n + 3

none

If there are six G.Ms between 3 and 284 then G₄ =

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24

48

12

6

7th term of G.P 3, 6, 12 ..... is:

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512

192

48

96

The reciprocal of the terms of A.P. form:

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A.P

G.P

H.P

none of these

What is the next term in the sequence 10, 7, 4, 1...........?

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2

-2

-3

none of these

What is the common difference of the sequence 11, 5, -1, ......... ?

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6

-6

none of the foregoing numbers

An infinite sequence has no:

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nth term

last term

sum

none

What is the general term of the sequence 2, 4, 6, 8, ........... ?

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2n

n + 1

2n²

none of these

The series 2 + 2 + 2 ..... is:

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divergent

convergent

oscillatory

none of these

Domain of finite sequence is:

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set of natural numbers

subset of N

R

none

If S is the H.M between 2 and b then b = :

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-10

10

7

5

Sum of all odd numbers between 100 and 200 is:

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6200

6500

3750

7500

Two A.Ms. between 3 and 9 are:

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3. 6

5, 7

6, 12

3, 9

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A.P

G.P

H.P

none

If a_n = (n + 1) a_n-1, a₁ = 1, second term of the sequence is:

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3

1

2

4

A.M between x - 3 & x + 5 is __________:

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x + 1

x - 1

2x + 2

none

A geometric series is convergent only if:

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| r | > 1

| r | < 1

| r | = 1

none of these

Zero cannot be a term of:

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A.P and G.P

G.P and H.P

A.P and H.P

only H.P

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