Question # 1

A dice is thrown. The probability to get an odd number is;

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1

none of these

The value of ⁵C₂ is:

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1

10

20

30

Numbers are formed by using all the digits 1, 2, 3, 4, 5, 6 on digit being repeated, then the numbers which are divisible by 5 are:

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110

120

122

124

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

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112

212

144

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

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

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divergent

convergent

oscillatory

none of these

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

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112

144

212

none

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4

6

8

10

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

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32

64

128

16

n! stands for:

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product of first natural numbers

sum of n natural numbers

product of n integers

none of these

Choose an answer

0

-1

>1

none

Arithmetic series is only possible if:

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|d| = 1

|d| < 1

|d| > 1

none

The probability that a number selected from the numbers 1, 2, 3, 4, 5, ......, 16 is a prime number is:

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

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70

54

70

73

The number of diagonals of a polygon with n sides is:

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none of these

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

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2n - 1

2n + 1

2n + 3

none

An infinite sequence has no:

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nth term

last term

sum

none

No. of signals made by 5 flags of different colors using 3 flags at a time is:

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60

15

10

None

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

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2n

n + 1

2n²

none of these

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