Question # 1

A sequence is denoted by:

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{a_n}

a_n

a₁ + (n-1) d

Sum of integral multiples of there between 4 and 22 is:

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81

75

211

none

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

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-10

10

7

5

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

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2n

n + 1

2n²

none of these

A geometric series is convergent only if:

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| r | > 1

| r | < 1

| r | = 1

none of these

Sum of all odd numbers between 100 and 200 is:

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6200

6500

3750

7500

An infinite sequence has no:

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nth term

last term

sum

none

Sequences are also called:

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Series

Progressions

Means

Convergence

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

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x + 1

x - 1

2x + 2

none

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

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5

3

7

9

A.M between 1 + x - x² and 1 + x + x² is:

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1 + x²

1 + x

2

none

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

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

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112

212

144

none

A clock strikes once when its hour hand is at one, twice when it is at two, and so on. How many times does the clock strike in ten hours ?

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55

78

66

46

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

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arithmetic sequence

geometricsequence

harmonicsequence

none of these

Arithmetic series is only possible if:

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|d| = 1

|d| < 1

|d| > 1

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

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

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24

48

12

6

Reciprocals of the terms of the geometric sequence form:

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A.P

G.P

H.P

none

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

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arithmetic sequence

geometricsequence

sequence

none of these

Two A.Ms. between 3 and 9 are:

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3. 6

5, 7

6, 12

3, 9

If a_n-3 = 2n - 5 then a_n =

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2n-1

2n+1

2n+3

none

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