Number Series Questions For IBPS PO PDF:-
Download Number Series Questions For IBPS PO PDF. Practice IBPS PO Number series questions with solutions for Banking exams based on asked questions in previous papers.
Download Number Series Questions For IBPS PO PDF
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Instructions: Instructions: In the following number series only one number is wrong. Find out the wrong number.
Question 1: 7, 12, 40, 222, 1742, 17390, 208608
a) 7
b) 12
c) 40
d) 1742
e) 208608
Question 2: 6, 91, 584, 2935, 11756, 35277, 70558
a) 91
b) 70558
c) 584
d) 2935
e) 35277
Question 3: 9050, 5675, 3478, 2147, 1418, 1077, 950
a) 3478
b) 1418
c) 5673
d) 2147
e) 1077
Question 4: 1, 4, 25, 256, 3125, 46656, 823543
a) 3125
b) 823543
c) 46656
d) 25
e) 256
Question 5: 8424, 4212, 2106, 1051, 526.5, 263.25, 131.625
a) 131.625
b) 1051
c) 4212
d) 8424
e) 263.25
Instructions: In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.
Question 6: 5531 5506 5425 5304 5135 4910 4621
a) 5531
b) 5425
c) 4621
d) 5135
e) 5506
Question 7: 6 7 9 13 26 37 68
a) 7
b) 26
c) 69
d) 37
e) 9
Question 8: 1 3 10 36 152 760 4632
a) 3
b) 36
c) 4632
d) 760
e) 152
Question 9: 4 3 9 34 96 219 435
a) 4
b) 9
c) 34
d) 435
e) 219
Question 10: 157.5 45 15 6 3 2 1
a) 1
b) 2
c) 6
d) 157.5
e) 45
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Answers & Solutions:
1) Answer (D)
(7-1) x 2 = 12
(12 – 2) x 4 = 40
(40 – 3) x 6 = 222
(222 – 4) x 8 = 1744 ≠ 1742
(1744 – 5) x 10 = 17390
(17390 – 6) x 12 = 208608
2) Answer (C)
$6 x 7 + 7^2 = 91 , 91 x 6 + 6^2 = 582 ≠ 584 , 582 x 5 + 5^2 = 2935,…$
3) Answer (E)
$9070 – 15^3 = 5675 , 5675 – 13^3 = 3478 , 3478 – 11^3 = 2147 , 2147 – 9^3 = 1418 ,\\
1418 – 7^3 = 1075 ≠ 1077 , 1075 – 5^3 = 950$
4) Answer (D)
$1^1 = 1 , 2^2 = 4 , 3^3 = 27 ≠ 25 , 4^4 = 256 , 5^5 = 3125 , 6^6 = 46656 , 7^7 = 823543$
5) Answer (B)
$\frac{8424}{2}$ = 4212
$\frac{4212}{2}$ = 2106
$\frac{2106}{2}$ = 1053 ≠ 1051
$\frac{1051}{2}$ = 526.5
$\frac{525.5}{2}$ = 263.25
$\frac{263.25}{2}$ = 131.625
6) Answer (A)
5531 – $5^2$ = 5506
5506 – $9^2$ = 5425
5425 – $11^2$ = 5304
5134 – $13^2$ = 5135
5135 – $15^2$ = 4910
4910 – $17^2$ = 4621
Ever number after 5531 has a difference of a square.
Hence 5531 is the wrong number.
7) Answer (D)
6 + 1 = 7
7 + 2 = 9
9 + 4 = 13
13 + 13 = 26
26 + 11 = 37
37 + 22 = 69
The number to be added is increasing everytime except for 37 where 11 is added after 13.
8) Answer (D)
(1 x 1) + 2 = 3
(3 x 2) + 4 = 10
(10 x 3) + 6 = 36
(36 x 4) + 8 = 152
(152 x 5) + 10 = 770 ≠760
(770 x 6) + 12 = 4632
9) Answer (D)
$0^2$ + 4 = 4
$1^2$ + 2 = 3
$3^2$ + 0 = 9
$6^2$ – 2 = 34
$10^2$ – 4 = 96
$15^2$ – 6 = 219
$21^2$ – 8 = 433 ≠ 435
10) Answer (A)
157.5 ÷ 3.5 = 45
45 ÷ 3 = 15
15 ÷ 2.5 = 6
6 ÷ 2 = 3
3 ÷ 1.5 = 2
2 ÷ 1 = 2 ≠ 1
To know more about the exam, try reading our other blogs on how to prepare for IBPS PO cloze test, 8 tips to improve English for IBPS PO and how to prepare for high-level data interpretation for IBPS PO.
