Question # 1

The next term of the sequence-1, 2, 12, 40, .........is:

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112

212

144

none

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

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2n

n + 1

2n²

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

Which number cannot be a term of a geometric sequence ?

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0

1

-1

r

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

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2n - 1

2n + 1

2n + 3

none

Fifth term of the sequence 2, 6, 11, 17.

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24

41

32

G.M between -2i and 8i is:

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4 or -4

4i or -4i

2 or -2

none

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A.P

G.P

H.P

none

Two A.Ms. between 3 and 9 are:

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3. 6

5, 7

6, 12

3, 9

Sequences are also called:

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Series

Progressions

Means

Convergence

The sum of 10 A.Ms between 3 and 47 is:

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50

250

100

500

The series 3 + 33 + 333 + ...... is:

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A.P

G.P

H.P

none of these

Arithmetic series is only possible if:

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|d| = 1

|d| < 1

|d| > 1

none

A sequence of numbers whose reciprocal form an arithmetic sequence, is known as:

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arithmetic sequence

geometricsequence

harmonicsequence

none of these

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

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 sequence is denoted by:

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{a_n}

a_n

a₁ + (n-1) d

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

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24

48

12

6

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

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6

-6

none of the foregoing numbers

What is called the arrangement of numbers formed according to some definite rule ?

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arithmetic sequence

geometricsequence

sequence

none of these

In an A.P.a₃ = 12 and a₇ = 32 then d = :

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5

3

7

9

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