Question # 1

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

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2n-1

2n+1

2n+3

none

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 sequence is denoted by:

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{a_n}

a_n

a₁ + (n-1) d

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

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3

1

2

4

Reciprocals of the terms of the geometric sequence form:

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A.P

G.P

H.P

none

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

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

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2n - 1

2n + 1

2n + 3

none

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

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950

760

1230

875

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

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24

48

12

6

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

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112

144

212

none

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

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A.P

G.P

H.P

none of these

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

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arithmetic sequence

geometricsequence

harmonicsequence

none of these

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

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x + 1

x - 1

2x + 2

none

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

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-10

10

7

5

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

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32

64

128

16

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

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series

sequence

means

convergent

Sum of all odd numbers between 100 and 200 is:

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6200

6500

3750

7500

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11th Class FA Mathematics Chapter 6 Online Test MCQs With Answers

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