Question # 1

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

No. of diagonals can be formed by joining the vertices of the polygon having 12 sides ?

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70

54

70

73

No. of necklaces can be made from 7 beads of different colors ?

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360

120

60

70

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

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x + 1

x - 1

2x + 2

none

An infinite sequence has no:

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nth term

last term

sum

none

No. of triangles can be formed by joining the vertices of the polygon having 12 sides ?

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202

220

110

none of these

The value of ⁵C₂ is:

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1

10

20

30

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

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divergent

convergent

oscillatory

none of these

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

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112

212

144

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

Arithmetic series is only possible if:

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|d| = 1

|d| < 1

|d| > 1

none

If ⁿP₂ = 30 then n = :

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5

6

2

3

For a positive integer n:

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(n+1)! = (n+1)n!

(n+1)! = (n+1)(n-1)!

n! = n(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

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

A geometric series is convergent only if:

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| r | > 1

| r | < 1

| r | = 1

none of these

n! stands for:

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product of first natural numbers

sum of n natural numbers

product of n integers

none of these

The number of ways in which fiver persons can sit at a round table is:

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4!

5!

none of these

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

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Mathematics FA Part 1 Chapter 7 Online Test MCQs With Answers

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