Number series Basics, Expected Questions, 2004 to 2017 MCQs | CBSE UGC NET

Number series Basics, Expected Questions, 2004 to 2017 MCQs | CBSE UGC NET | All Competitive Exams

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Contents

Number Series

Basics
Practice Questions
Previous year Questions
Expected Question

Basics- Types of Number Series

Type 1 add or subtract

Type 2 constant times like multiple + something or - something constant

Type 3 x .5 x 1 x1.5 with + - mixture of type 2 and 3

Type 4 Time increasing or decreasing with + -

Type 5 Ups and down with + or - , multiply divide

Type 6 Series

Directions (1-10): What will come in place of the question marks (?) in the following Number series?

11, 14, 19, 22, 27, 30, ?

A. 39

B. 34

C. 36

D. 35

E. None of these

73205, 6655, 605, 55, ?

A. 9

B. 5

C. 13

D. 11

E. None of these

(B)

5 x 11 = 55,

55 x 11 = 605,

605 x 11 = 6655,

6655 x 11 = 73205

What is the next number of the following sequence.

9, 7, 7, 9, 13, ...

3^2 = 9 = 9 (sum of digit)

4^2 = 16 = 7 (Sum of digit)

5^2 = 25 = 7 (Sum of digit)

6^2 = 36 = 9 (Sum of digit)

7^2 = 49 = 13 (Sum of digit)

Similarly

8^2 = 64 = 10 (Sum of digit)

Analyse the Pattern before solving

1. 6,8,13,23,?,66

2. 7,8,18,57,232,?

3. 109,110,102,129,65,?

4. 4,18,46,102,?,438

5 515, 507, 480, 416, ?, 75

6 12, 7, 8, 17, 69, ?

December 2004

In the sequence of numbers

2/3, 4/7, X, 11/21, 16/31

The missing number X is:

(A) 8/10

(B) 6/10

(D) 7/13

Answer D

December 2005

Insert the missing number:

8 24 12 ? 18 54

(A) 26

(B) 24

(D) 32

June 2006

Insert the missing number: 16/32, 15 /33, 17/31, 14/34 ?

(A) 19/35

(B) 19/30

(D) 18/30

Answer D

December 2006

1. In the sequence of numbers 8, 24, 12, X, 18, 54 the missing number X is:

(A) 26

(B) 24

(D) 32

Answer C

June 2007

Which is the number that comes next in the sequence?

9, 8, 8, 8, 7, 8, 6, ?

(A) 5

(B) 6

(D) 4

December 2007

Find out the number which should come at the place of question mark which will complete the following series: 5, 4, 9, 17, 35, ? = 139

(A) 149

(B) 79

(D) 69

Answer D

December 2007

Insert the missing number: 36/62 , 39/63, 43/61, 48/64, ?

(A) 51/65

(B) 56/60

(D) 33/60

December 2007

Choose the number which is different from others in the group:

(A) 49

(B) 63

(D) 81

Answer D

Insert the missing number: 4 : 17 : : 7 : ?

(A) 48

(B) 49

(D) 51

Answer C

2007

Which number is missing in the following series?

2, 5, 10, 17, 26, 37, 50, ?

(A) 63

(B) 65

(D) 69

Answer B

June 2008

Insert the missing number in the following series:

4 16 8 64 ? 256

(A) 16

(B) 24

(D) 20

December 2008

1. Insert the missing number in the following:

2/3, 4/7, ? , 11/21, 16/31

(A) 10/8

(B) 6/10

(D) 7/13

Find out the wrong number in the sequence:

125, 127, 130, 135, 142, 153, 165

(A) 130

(B) 142

(D) 165

Answer D

June 2009

1. Insert the missing number in the following:

3, 8, 18, 23, 33, ?, 48

(A) 37

(B) 40

(D) 45

Answer C

June 2009

Find out the wrong number in the sequence. 52, 51, 48, 43, 34, 27, 16

(A) 27

(B) 34

(D) 48

December 2009

The next number in the series 2, 5, 9, 19, 37, ? will be

(A) 74

(B) 75

(D) None of the above

December 2010

Find the wrong number in the sequence: 52, 51, 48, 43, 34, 27, 16

(A) 27

(B) 34

(D) 48

Answer B

June 2010

Find the next number in the following series:

2, 5, 10, 17, 26, 37, 50, ?

(A) 63

(B) 65

(D) 69

Answer B

June 2011

Find the wrong number in the sequence

125, 127, 130, 135, 142, 153, 165

(A) 130

(B) 142

(D) 165

December 2011

What is the number that comes next in the sequence?

2, 5, 9, 19, 37, ___

(A) 76

(B) 74

(D) 50

Answer C

June 2012

Which is the number that comes next in the following sequence?

2, 6, 12, 20, 30, 42, 56, _____

(A) 60

(B) 64

(D) 70

Answer C

December 2012

The missing number in the series :

0, 6, 24, 60, 120, ?, 336, is

(A) 240

(B) 220

(D) 210

Answer D

First Number = 1 *2 *3 = 6

Second Number = 2*3*4 = 24

Third Number = 3*4*5 = 60

Fourth Number = 4*5*6 = 120

Fifth Number = 5*6*7 = 210

Sixth Number = 6*7*8 = 336.

Alternatively,

2*2*2-2=6

3*3*3-3=24

4*4*4-4=60

5*5*5-5=120

6*6*6-6=210

7*7*7-7=336.

June 2013

The missing number in the series

40, 120, 60, 180, 90, ?, 135 is

(A) 110

(B) 270

(D) 210

September 2013

The missing term in the series 2, 7, 24, 77, ?, 723 is

(A) 238

(B) 432

(D) 320

June 2014

lf the series 4,5,8,13,14,17,22,........ is continued in the same pattern, which one of the following is not a term of this series?

(A) 31

(B) 32

(D) 35

December 2014

The next term in the series: 2, 7, 28, 63, 126, --- is

(A) 215

(B) 245

(D) 296

June 2015

1. The next term in the series is : 2, 5, 9, 19, 37, ?

(A) 83

(B) 75

(D) 80

Answer B

July 2016

In the series

3, 11, 23, 39, 59, ..........

The next term will be

(A) 63

(B) 73

(D) 93

August 2016

In the series

1, 5, 13, 25, 41, …….

the next term is

(A) 59

(B) 63

(D) 68

Jan 2017

The missing term in the series

1, 4, 27, 16, ?, 36, 343, … is

(1) 30

(2) 49

(3) 125

(4) 81

Nov 2017

In the series 1, 6, 15, 28, 45 … the next term will be:

(a) 76

(b) 56

(d) 66

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