Question # 1

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

ⁿC₄ =ⁿC₈then n = :

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4

12

8

6

No. of diagonals can be formed by joining the vertices of the polygon having 5 sides ?

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5

15

51

10

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 dice is thrown. The probability to get an even number is:

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1

none of these

The value of ⁵C₂ is:

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1

10

20

30

Number of ways of arranging 5 keys in a circular ring is:

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12

24

6

5

Domain of finite sequence is:

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set of natural numbers

subset of N

R

none

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

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32

64

128

16

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

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112

144

212

none

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

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2

-2

-3

none of these

Which number cannot be a term of a geometric sequence ?

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0

1

-1

r

In a simultaneous throw of two dice, The probability of getting sum 3 or 11 is:

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none

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

Two A.Ms. between 3 and 9 are:

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3. 6

5, 7

6, 12

3, 9

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

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360

120

60

70

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

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

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5

3

7

9

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

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112

212

144

none

Reciprocals of the terms of the geometric sequence form:

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A.P

G.P

H.P

none

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

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6

-6

none of the foregoing numbers

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