Question # 1

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

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2n

n + 1

2n²

none of these

A sequence is denoted by:

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{a_n}

a_n

a₁ + (n-1) d

Domain of finite sequence is:

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set of natural numbers

subset of N

R

none

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

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5

3

7

9

Which number cannot be a term of a geometric sequence ?

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0

1

-1

r

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

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2

-2

-3

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

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

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32

64

128

16

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

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24

48

12

6

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

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950

760

1230

875

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

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divergent

convergent

oscillatory

none of these

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

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

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A.P

G.P

H.P

none of these

What is called the difference between two consecutive terms of an arithmetic sequence ?

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common ratio

common difference

common element

none of these

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

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50

250

100

500

Reciprocals of the terms of the geometric sequence form:

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A.P

G.P

H.P

none

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

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4 or -4

4i or -4i

2 or -2

none

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

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2n - 1

2n + 1

2n + 3

none

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

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6

-6

none of the foregoing numbers

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

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512

192

48

96

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