Question # 1

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

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A.P

G.P

H.P

none of these

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

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2n - 1

2n + 1

2n + 3

none

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

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

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81

75

211

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

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

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1 + x²

1 + x

2

none

Reciprocals of the terms of the geometric sequence form:

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A.P

G.P

H.P

none

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

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A.P

G.P

H.P

none of these

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

Choose an answer

-10

10

7

5

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

Sum of all positive integral multiples of 3 less than 100 is:

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950

760

1230

875

The product of three G.Ms between 1 and 16 is:

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32

64

128

16

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

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divergent

convergent

oscillatory

none of these

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

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4 or -4

4i or -4i

2 or -2

none

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

Choose an answer

512

192

48

96

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

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5

3

7

9

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

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2

-2

-3

none of these

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

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24

41

32

The next term of the sequence 1, 6, 20, 56, ........ is:

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112

144

212

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

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