Bank PO Series Questions Solved Problems with Detailed Solutions [Free PDF]
Last updated on May 29, 2025
Important Bank PO Series Questions
Bank PO Series Questions Question 1:
What should come in place of the question mark '?' in the following number series?
62, 60, 63, 58, 65, ?
Answer (Detailed Solution Below)
Bank PO Series Questions Question 1 Detailed Solution
The series follows the following pattern:
62 – 2 = 60
60 + 3 = 63
63 – 5 = 58
58 + 7 = 65
65 – 11 = 54
Bank PO Series Questions Question 2:
What should come in place of the question mark '?' in the following number series?
125, 129, 120, 136, 111, ?
Answer (Detailed Solution Below)
Bank PO Series Questions Question 2 Detailed Solution
The series follows the following pattern:
125 + 22 = 129
129 – 32 = 120
120 + 42 = 136
136 – 52 = 111
111 + 62 = 147
Bank PO Series Questions Question 3:
What should come in place of the question mark '?' in the following number series?
700, 692, 665, 601, 476, ?
Answer (Detailed Solution Below)
Bank PO Series Questions Question 3 Detailed Solution
The series follows the following pattern:
700 – 23 = 692
692 – 33 = 665
665 – 43 = 601
601 – 53 = 476
476 – 63 = 260
Bank PO Series Questions Question 4:
What should come in place of the question mark '?' in the following number series?
52, 67, 84, 103, ?, 147
Answer (Detailed Solution Below)
Bank PO Series Questions Question 4 Detailed Solution
The series follows the following pattern:
72 + 3 = 52
82 + 3 = 67
92 + 3 = 84
102 + 3 = 103
112 + 3 = 124
122 + 3 = 147
Bank PO Series Questions Question 5:
In each of the following number series, a wrong number is given. Find out that number.
8.5, 18, 55, 231, 1106, 6637
Answer (Detailed Solution Below)
Bank PO Series Questions Question 5 Detailed Solution
The series follows the following pattern:
8.5 × 2 + 1 = 18
18 × 3 + 1 = 55
55 × 4 + 1 = 221
221 × 5 + 1 = 1106
1106 × 6 + 1 = 6637
∴ The wrong term in the series is 231.
Bank PO Series Questions Question 6:
What should come in place of the question mark '?' in the following number series?
24, 25, 52, 159, ?, 3205
Answer (Detailed Solution Below)
Bank PO Series Questions Question 6 Detailed Solution
The series follows the following pattern:
24 × 1 + 1 = 25
25 × 2 + 2 = 52
52 × 3 + 3 = 159
159 × 4 + 4 = 640
640 × 5 + 5 = 3205
Bank PO Series Questions Question 7:
What should come in place of the question mark '?' in the following number series?
107, 108, 104, 113, ?, 122
Answer (Detailed Solution Below)
Bank PO Series Questions Question 7 Detailed Solution
The series follows the following pattern:
107 + 12 = 108
108 - 22 = 104
104 + 32 = 113
113 - 42 = 97
97 + 52 = 122
Bank PO Series Questions Question 8:
In each of the following number series, the wrong number is given, find out that number.
16, 30, 58, 114, 226, 454
Answer (Detailed Solution Below)
Bank PO Series Questions Question 8 Detailed Solution
The series follows the following pattern:
16 × 2 - 2 = 30
30 × 2 - 2 = 58
58 × 2 - 2 = 114
114 × 2 - 2 = 226
226 × 2 - 2 = 450
∴ The wrong term in the series is 454.
Bank PO Series Questions Question 9:
In each of the following number series, a wrong number is given. Find out that number.
2.5, 10, 25, 90, 97, 776
Answer (Detailed Solution Below)
Bank PO Series Questions Question 9 Detailed Solution
The series follows the following pattern:
2.5 × 4 = 10
10 + 5 = 15
15 × 6 = 90
90 + 7 = 97
97 × 8 = 776
∴ The wrong term in the series is 25.
Bank PO Series Questions Question 10:
In each of the following number series, the wrong number is given, find out that number.
43, 44, 46, 55, 117, 744
Answer (Detailed Solution Below)
Bank PO Series Questions Question 10 Detailed Solution
The series follows the following pattern:
43 + 10 = 44
44 + 21 = 46
46 + 32 = 55
55 + 43 = 119
119 + 54 = 744
∴ The wrong term in the series is 117.
Bank PO Series Questions Question 11:
In each of the following number series, the wrong number is given, find out that number.
44, 49, 70, 87, 128, 189
Answer (Detailed Solution Below)
Bank PO Series Questions Question 11 Detailed Solution
The series follows the following pattern:
44 + 12 + 22 = 49
49 + 22 + 32 = 62
62 + 32 + 42 = 87
87 + 42 + 52 = 128
128 + 52 + 62 = 189
∴ The wrong term in the series is 70.
Bank PO Series Questions Question 12:
What should come in place of the question mark '?' in the following number series?
96, 48, 47.5, ?, 46.5, 69.75
Answer (Detailed Solution Below)
Bank PO Series Questions Question 12 Detailed Solution
The series follows the following pattern:
96 × 0.5 = 48
48 - 0.5 = 47.5
47.5 × 1 = 47.5
47.5 - 1 = 46.5
46.5 × 1.5 = 69.75