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# Wrong Term Number Series Questions For IBPS Clerk

Download important Wrong Term Number Series Questions PDF based on previously asked questions in IBPS Clerk and other Banking Exams. Practice Wrong Term Number Series Question and Answers for IBPS Clerk Exam.

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Instructions

In the following number series only one number is wrong. Find out the wrong number.

Question 1:Â 11, 18, 29, 42, 59, 80, 101

a)Â 42

b)Â 18

c)Â 29

d)Â 59

e)Â None of these

Question 2:Â 2, 9, 32, 105, 436, 2195, 13182

a)Â 436

b)Â 2195

c)Â 9

d)Â 32

e)Â None of these

Question 3:Â 5, 55, 495, 3465, 17325, 34650, 51975,

a)Â 495

b)Â 34650

c)Â 55

d)Â 17325

e)Â None of these

Question 4:Â 3, 7, 16, 32, 56, 93, 142

a)Â 56

b)Â 16

c)Â 32

d)Â 7

e)Â None of these

Question 5:Â 4, 5, 12, 38, 160, 805, 4836

a)Â 12

b)Â 160

c)Â 38

d)Â 805

e)Â None of these

Instructions

In the following number series, a wrong number is given. Find out that wrong number.

Question 6:Â 2 11 38 197 1172 8227 65806

a)Â 11

b)Â 38

c)Â 197

d)Â 1172

e)Â 8227

Question 7:Â 16 19 21 30 46 71 107

a)Â 19

b)Â 21

c)Â 30

d)Â 46

e)Â 71

Question 8:Â 7 9 16 25 41 68 107 173

a)Â 107

b)Â 16

c)Â 41

d)Â 68

e)Â 25

Question 9:Â 4 2 1.5 1.75 1.875

a)Â 2

b)Â 1.5

c)Â 1.75

d)Â 4

e)Â 1.875

Question 10:Â 16 4 2 1.5 1.75 1.875

a)Â 1.875

b)Â 1.75

c)Â 1.5

d)Â 2

e)Â 4

Instructions

In the following number series, a wrong number is given. Identify the wrong number that does not follow the given pattern.

Question 11:Â 3, 10, 33, 111, 349, 1072, 3252

a)Â 33

b)Â 111

c)Â 349

d)Â 1072

e)Â 10

Question 12:Â 1, 2, 12, 63, 316, 1704, 10446

a)Â 63

b)Â 1704

c)Â 316

d)Â 10446

e)Â 2

Question 13:Â 2, 6, 24, 96, 285, 568, 567

a)Â 6

b)Â 96

c)Â 24

d)Â 568

e)Â 567

Question 14:Â 15, 28, 43, 60, 79, 101, 123

a)Â 28

b)Â 43

c)Â 60

d)Â 101

e)Â 123

Question 15:Â 9, 10, 18, 45, 109, 235, 450

a)Â 10

b)Â 9

c)Â 18

d)Â 109

e)Â 235

Answers & Solutions:

1)Â AnswerÂ (E)

Prime numbers starting from 7 are added.

11 + 7 = 18

18 + 11 = 29

29 + 13 = 42

42 + 17 = 59

59 + 19 =Â 78

78 + 23 = 101

Hence, the number which is wrong is 80, as it is not in the options given, the correct answer is None of the above

2)Â AnswerÂ (D)

The pattern followed isÂ :

2Â $\times 1 + (1 \times 7)$ = 9

9Â $\times 2 + (2 \times 6)$ =Â 30

30Â $\times 3 + (3 \times 5)$ =Â 105

105Â $\times 4 + (4 \times 4)$ =Â 436

436Â $\times 5 + (5 \times 3)$ =Â 2195

2195Â $\times 6 + (6 \times 2)$ =Â 13182

3)Â AnswerÂ (B)

Consecutive odd numbers starting from 11 in decreasing order are multiplied.

5 $\times 11$ = 55

55Â $\times 9$ =Â 495

495Â $\times 7$ =Â 3465

3465Â $\times 5$ =Â 17325

17325Â $\times 3$ =Â 51975

51975Â Â $\times 1$ =Â 51975

4)Â AnswerÂ (A)

Squares of natural numbers are added

3 $+ 2^2$ = 7

7Â $+ 3^2$ =Â 16

16Â $+ 4^2$ =Â 32

32Â $+ 5^2$ =Â 57

57Â $+ 6^2$ =Â 93

93Â $+ 7^2$ =Â 142

5)Â AnswerÂ (C)

The pattern followed isÂ :

4 $\times 1 + 1$ = 5

5Â $\times 2 + 2$ =Â 12

12Â $\times 3 + 3$ =Â 39

39Â $\times 4 + 4$ =Â 160

160Â $\times 5 + 5$ =Â 805

805Â $\times 6 + 6$ =Â 4836

6)Â AnswerÂ (D)

The pattern here followed isÂ :

2 * 3 + 5 = 11

11 * 4 – 6 = 38

38 * 5 + 7 = 197

197 * 6 – 8 =Â 1174

1174 * 7 + 9 = 8227

8227 * 8 – 10 = 65806

Thus, 1172 is wrong

7)Â AnswerÂ (A)

The pattern here followed isÂ :

107 – 71 = 36 = $6^2$

71 – 46 = 25 =Â $5^2$

46 – 30 = 16 =Â $4^2$

30 – 21 = 9 =Â $3^2$

21 – 17 = 4 =Â $2^2$

17 – 16 = 1 =Â $1^2$

Thus, 19 is wrong

8)Â AnswerÂ (D)

The pattern here followed isÂ :

7 + 9 = 16

9 + 16 = 25

16 + 25 = 41

25 + 41 = 66

41 + 66 = 107

66 + 107 = 173

Thus, 68 is wrong

9)Â AnswerÂ (C)

The pattern followed isÂ that multiples of 0.25 are multiplied.

4 $\times0.5$ = 2

2Â $\times0.75$ = 1.5

1.5Â $\times1$ =Â 1.5 $\neq1.75$

1.5Â $\times1.25$ =Â 1.875

=> Ans – (C)

10)Â AnswerÂ (B)

The pattern here followed isÂ :

16 $\times \frac{1}{4}$ = 4

4Â $\times \frac{2}{4}$Â = 2

2Â $\times \frac{3}{4}$Â = 1.5

1.5Â $\times \frac{4}{4}$Â =Â 1.5

1.5Â $\times \frac{5}{4}$Â = 1.875

Clearly 1.75 should be replaced by 1.5

11)Â AnswerÂ (A)

Each number is multiplied by 3 and then squares of natural numbers are added.

3 $\times 3 + 1^2$ = 10

10Â $\times 3 + 2^2$ =Â 34 $\neq$Â 33

34Â $\times 3 + 3^2$ =Â 111

111Â $\times 3 + 4^2$ =Â 349

349Â $\times 3 + 5^2$ =Â 1072

1072Â $\times 3 + 6^2$ =Â 3252

12)Â AnswerÂ (B)

The pattern isÂ :

1 $\times 1 + 1^3$ = 2

2Â $\times 2 + 2^3$ =Â 12

12Â $\times 3 + 3^3$ =Â 63

63Â $\times 4 + 4^3$ =Â 316

316Â $\times 5 + 5^3$ =Â 1705 $\neq$Â 1704

1705Â $\times 6 + 6^3$ =Â 10446

13)Â AnswerÂ (C)

The pattern isÂ :

2 $\times 6 – 6$ = 6

6Â $\times 5 – 5$ =Â 25 $\neq$Â 24

25Â $\times 4 – 4$ =Â 96

96Â $\times 3 – 3$ =Â 285

285Â $\times 2 – 2$ =Â 568

568Â $\times 1 – 1$ =Â 567

14)Â AnswerÂ (D)

Consecutive odd numbers starting from 13 are added

15 $+ 13$ = 28

28Â $+ 15$ =Â 43

43Â $+ 17$ =Â 60

60Â $+ 19$ =Â 79

79Â $+ 21$ =Â 100 $\neq$Â 101

100Â $+ 23$ =Â 123

15)Â AnswerÂ (E)

In the series, cubes of natural numbers are added

9 $+ 1^3$ = 10

10Â $+ 2^3$ =Â 18

18Â $+ 3^3$ =Â 45

45Â $+ 4^3$ =Â 109

109Â $+ 5^3$ = 234 $\neq$Â 235

234Â $+ 6^3$ =Â 450

We hope this Wrong Term Number Series questions and answers for IBPS Clerk preparation will be helpful to you.