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Number Series Questions for Bank Exams – Now a days, almost in all competitive exams Number Series related questions is must asked and specially in Bank Recruitment Exams.

Following are some Number Series questions which are likely to be asked/ already asked in competitive exams. Following Number Series questions will help you securing good marks in upcoming SBI PO, SBI Clerk, IBPS PO V, IBPS Clerk V, IBPS RRB Exams.

Number Series Questions for Bank Exams – Now a days, almost in all competitive exams Number Series related questions is must asked and specially in Bank Recruitment Exams.

Following are some Number Series questions which are likely to be asked/ already asked in competitive exams. Following Number Series questions will help you securing good marks in upcoming SBI PO, SBI Clerk, IBPS PO V, IBPS Clerk V, IBPS RRB Exams.

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__Questions ____of Series Completion Set 3__

**In each of the following questions, one term in the number series is wrong. Find out the wrong term.**

**Q1. 3, 7, 15, 39, 63, 127, 255, 511**

(a) 15

(b) 39

(c) 63

(d) 127

**Q2. 445, 221, 109, 46, 25, 11, 4**

(a) 25

(b) 46

(c) 109

(d) 221

**Q3. 1236, 2346, 3456, 4566, 5686**

(a) 1236

(b) 3456,

(c) 4566

(d) 5686

**Q4. 5, 10, 40, 80, 320, 550, 2560**

(a) 80

(b) 320

(c) 550

(d) 2560

**Q5. 3, 2, 8, 9, 13, 22, 18, 32, 23, 42**

(a) 8

(b) 9

(c) 13

(d) 22

**Q6. 8, 27, 125, 343, 1331**

(a) 8

(b) 343

(c) 1331

(d) None of these

**Q7. 10, 14, 28, 32, 64, 68, 132**

(a) 28

(b) 32

(c) 64

(d) 132

**Q8. 1, 5, 5, 9, 7, 11, 11, 15, 12, 17**

(a) 11

(b) 12

(c) 17

(d) 15

**Q9. 11, 2, 21, 3, 32, 4, 41, 5, 51, 6**

(a) 21

(b) 11

(c) 32

(d) 51

**Q10. 11, 5, 20, 12, 40, 26, 74, 54**

(a) 5

(b) 20

(c) 40

(d) 26

**Q11. 56, 72, 90, 110, 132, 150**

(a) 72

(b) 90

(c) 110

(d) 150

**Q12. 8, 13, 21, 32, 47, 63, 83**

(a) 13

(b) 32

(c) 47

(d) 63

**Q13. 89, 78, 86, 80, 85, 82, 83**

(a) 83

(b) 82

(c) 86

(d) 78

**Q14. 25, 36, 49, 81, 121, 169, 225**

(a) 36

(b) 49

(c) 169

(d) 225

**Q15. 2, 5, 10, 17, 26, 37, 50, 64**

(a) 17

(c) 37

(d) 64

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__Answer of Series Completion Questions __

Answer 1 : Option (b)

The correct pattern is ( × 2 + 1 )

Hence, 39 is wrong and must be replaced by (15 × 2 + 1) = 31

Answer 2 : Option (b)

Go on subtracting 3 and dividing the result by 2 to obtain the next number. So, 46 is wrong.

109 - 3 = 106 ÷ 2 = 53

Answer 3 : Option (d)

The correct pattern in the series is ( + 1110 )

So, 5686 is wrong and must be replaced by (4566 + 1110) = 5676.

Answer 4 : Option (c)

The correct pattern is × 2, × 4, × 2, × 4, .....

So, 550 is wrong and must be replaced by (320 × 2) = 640.

Answer 5 : (b)

The given sequence is a combination of two series :

I. 3, 8, 13, 18, 23 and

II 2, 9, 22, 32,42

The pattern in I is + 5 and the pattern in II is + 10.

So, in II, 9 is wrong and must be replaced by (2 + 10) = 12

Answer 6 : (d)

The numbers are cubes of prime numbers

Clearly, none is wrong

Answer 7 : (d)

Alternately, the numbers are increased by four and doubled to get the next number

Thus, 10 + 4 = 14

14 × 2 = 28

28 + 4 = 32

32 × 2 =64 and so on.

So, 132 is wrong and must be replaced by (68 × 2) = 136.

Answer 8 : (b)

The given sequence is a combination of two series :

I. 1, 5, 7, 11, 12 and

II. 5, 9, 11, 15, 17

The pattern in both I and II is + 4, + 2, + 4, + 2

So, 12 is wrong and must be replaced by (11 + 2) = 13.

The numbers are cubes of prime numbers

Clearly, none is wrong

Answer 7 : (d)

Alternately, the numbers are increased by four and doubled to get the next number

Thus, 10 + 4 = 14

14 × 2 = 28

28 + 4 = 32

32 × 2 =64 and so on.

So, 132 is wrong and must be replaced by (68 × 2) = 136.

Answer 8 : (b)

The given sequence is a combination of two series :

I. 1, 5, 7, 11, 12 and

II. 5, 9, 11, 15, 17

The pattern in both I and II is + 4, + 2, + 4, + 2

So, 12 is wrong and must be replaced by (11 + 2) = 13.

Answer 9 : (c)

The given sequence is a combination of two series :

I. 11,21,32,41,51 , and

II. 2,3,4,5,6.

So the pattern is I = + 10

So, 32 is wrong and should be replaced by (21 + 10) = 31.

Answer 10 : (c)

The given sequence is a combination of two series :

I. 11, 20, 40, 74 and

II. 5, 12, 26, 54

The pattern in I becomes + 9, + 18, + 36, So 40 is replaced by 38.

Answer 11 : (d)

The numbers are 7 × 8, 8 × 9, 9 × 10, 10 × 11,11 × 12, 12 × 13.

So, 150 is wrong and must be replaced by (12 × 13) = 156.

Answer 12 : (c)

The sequence is + 5, + 8, + 11,

So 47 is wrong and it is replaced by (32 + 14) = 46.

Answer 13 : (c)

The sequence is - 11, + 9, - 7, + 5. - 3, + 1

So, 86 is wrong and it is replaced by (78 + 9) = 87

Answer 14 : (a)

The correct sequence is

The given sequence is a combination of two series :

I. 11,21,32,41,51 , and

II. 2,3,4,5,6.

So the pattern is I = + 10

So, 32 is wrong and should be replaced by (21 + 10) = 31.

Answer 10 : (c)

The given sequence is a combination of two series :

I. 11, 20, 40, 74 and

II. 5, 12, 26, 54

The pattern in I becomes + 9, + 18, + 36, So 40 is replaced by 38.

Answer 11 : (d)

The numbers are 7 × 8, 8 × 9, 9 × 10, 10 × 11,11 × 12, 12 × 13.

So, 150 is wrong and must be replaced by (12 × 13) = 156.

Answer 12 : (c)

The sequence is + 5, + 8, + 11,

So 47 is wrong and it is replaced by (32 + 14) = 46.

Answer 13 : (c)

The sequence is - 11, + 9, - 7, + 5. - 3, + 1

So, 86 is wrong and it is replaced by (78 + 9) = 87

Answer 14 : (a)

The correct sequence is

So, 36 is wrong.

Answer 15 : (d)

(1×1)+1 , (2×2)+1 , (3×3)+1 , (4×4)+1 , (5×5)+1 , (6×6)+1 , (7×7)+1 So (8×8)+1 = 65

But, 64 is out of pattern.