# Number Series Questions and Answers for Bank IBPS PO/Clerk

## Number Series Questions and Answers for Bank IBPS/SBI/RRB – PO/Clerk

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## NUMBER SERIES

Number Series is usually asked in all banking exams & it is an important topic as 3-5 questions are asked from this chapter. We will be given series which follows a certain pattern & our job is to identify that pattern & gave the answers accordingly.

Let us look at some problems:

What will come in place of the question mark (?) in the following number series?

Q:1  9, 16, 28, ?

(A) 54              (B) 52          (C) 56                  (D) 50             (E) None of these

A:1 The pattern of the number series is

9×2-2=16

16×2-4=28

28×2-6=50

Ans : Option (D)

Q:2 1, 3, 10, 41, ?

(A) 212            (B) 204        (C) 206    (D) 270         (E) 209

A:2 The pattern of the number series is

12+1=3

3×3+1=10

10×4+1=41

41×5+1=206

Ans : Option (C)

Q:3  3, 732, 1244, 1587, 1803, 1928, ?

(A) 2144          (B) 1992         (C) 1955          (D) 2053       (E) None of these

A:3 The pattern of the number series is :

732 – 3 = 729 = 93

1244 – 732 = 512 = 83

1587 – 1244 = 343 = 73

1803 – 1587 = 216 = 63

1928 – 1803 = 125 = 53

So,?= 1928 + 43 = 1928 + 64 = 1992

Option (B)

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Q:4 8, 11, 17, ? , 65, 165.5, 498.5

(A) 27.5              (B) 32            (C) 28          (D) 30.5        (E) None of these

A:4 The pattern of the number series is:

8 × 0.5 + 7 = 4 + 7=11

11 × 1 + 6 = 17

17 × 1.5 + 5 = 25.5 + 5 = 30.5

30.5 × 2 + 4 = 61 + 4 = 65

Option (D)

Q:5   8, 14, 32, 70, 136, ?

(A) 248                (B) 247           (C) 237         (D) 238       (E) None of these

A:5 The pattern of the number series is :

8 + 6 = 14

14 + 18 (= 6 + 12) = 32

32 + 38 (= 18 + 20) = 70

70 + 66 (= 38 + 28) = 136

136 + 102 (= 66 + 36) = 238

Option (D)

Q:6   4, 4, 10, 34, 94, ?

(A) 230                 (B) 214            (C) 220           (D) 209           (E) None of these

A:6 The pattern of the number series is:

4 + 0 = 4

4 + 6= 10

10 + 24 ( = 6 + 18) = 34

34 + 60 (= 6 + 54) = 94

94 + 168 (= 6 + 162) = 262

Option (E)

Q:7 1.7, 3.2, 2.7, 4.2, 3.7, ?, 4.7, 6.2

(A) 6.2                   (B) 5.5              (C) 5.2             (D) 4.3           (E) None of these

A:7 The pattern of the number series is :

1.7 + 1.5 = 3.2

3.2 – 0.5 = 2.7

2.7 + 1.5 = 4.2

4.2 – 0.5 = 3.7

3.7 + 1.5 = 5.2

5.2 – 0.5 = 4.7

4.7 + 1.5 = 6.2

Option (C)

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August 14, 2017