SBI PO Previous Year Number Series Questions:
Number Series Previous Year Questions for SBI PO Prelims and Mains exam. Download SBI PO Number Series last year asked questions on missing number and wrong number in the series with solutions.
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Question 1: Which number comes in the place of the question mark (?)194, 232, 274, 320, ?
a) 430
b) 380
c) 370
d) 350
e) 360
Question 2: Which number comes in the place of the question mark (?)21, 37, 57, 81, ?
a) 110
b) 109
c) 108
d) 106
e) 112
Question 3: Which number comes in the place of the question mark (?)20, 39, 66, 101, ?
a) 144
b) 140
c) 120
d) 180
e) 128
Question 4: Which number comes in the place of the question mark (?)2, 2, 12, 12, 30, 30 ?
a) 49
b) 44
c) 56
d) 53
e) 40
Question 5: Which number comes in the place of the question mark (?)5, 7.5, 10, 12.5, 15 ?
a) 17
b) 17.5
c) 20
d) 20.5
e) 22.5
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Question 6: Which number comes in the place of the question mark (?)5, 10, 17, 26, 37, 50 ?
a) 66
b) 65
c) 67
d) 70
e) 64
Question 7: Which number comes in the place of the question mark (?)26, 65, 122, 197, ?
a) 300
b) 400
c) 390
d) 290
e) 280
Question 8: Which number comes in the place of the question mark (?)987, 587, 331, 187, 123, (?)
a) 104
b) 113
c) 107
d) 114
e) None of these
Question 9: Which number comes in the place of the question mark (?)121, 132, 167, 226, 309, (?)
a) 424
b) 413
c) 427
d) 416
e) None of these
Question 10: Which number comes in the place of the question mark (?)125, 171, 263, 401, 585, (?)
a) 835
b) 815
c) 792
d) 788
e) None of these
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Question 11: Which number comes in the place of the question mark (?)5963, ?, 5938, 5913, 5877, 5828
a) 5932
b) 5940
c) 5951
d) 5954
e) None of these
Question 12: Which number comes in the place of the question mark (?)8, 56, 336, 2352, 14112, ?
a) 98874
b) 98784
c) 87894
d) 84672
e) None of these
Question 13: Instructions: In the following number series only one number is wrong. Find out the wrong number.
8424 4212 2106 1051 526.5 263.25 131.625
a) 131.625
b) 1051
c) 4212
d) 8424
e) 263.25
Question 14: Instructions: In the following number series only one number is wrong. Find out the wrong number.
1 4 25 256 3125 46656 823543
a) 3125
b) 823543
c) 46656
d) 25
e) 256
Question 15: Instructions: In the following number series only one number is wrong. Find out the wrong number.
9050 5675 3478 2147 1418 1077 950
a) 3478
b) 1418
c) 5673
d) 2147
e) 1077
Question 16: Instructions: In the following number series only one number is wrong. Find out the wrong number.
6 91 584 2935 11756 35277 70558
a) 91
b) 70558
c) 584
d) 2935
e) 35277
Question 17: Instructions: In the following number series only one number is wrong. Find out the wrong number.
7 12 40 222 1742 17390 208608
a) 7
b) 12
c) 40
d) 1742
e) 208608
Question 18: Instructions: In the following number series only one number is wrong. Find out the wrong number.
8424, 4212, 2106, 1051, 526.5, 263.25, 131.625
a) 131.625
b) 1051
c) 4212
d) 8424
e) 263.25
Question 19: Instructions: In the following number series only one number is wrong. Find out the wrong number.
1, 4, 25, 256, 3125, 46656, 823543
a) 3125
b) 823543
c) 46656
d) 25
e) 256
Question 20: Instructions: In the following number series only one number is wrong. Find out the wrong number.
9050, 5675, 3478, 2147, 1418, 1077, 950
a) 3478
b) 1418
c) 5673
d) 2147
e) 1077
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Question 21: Instructions: In the following number series only one number is wrong. Find out the wrong number.
6, 91, 584, 2935, 11756, 35277, 70558
a) 91
b) 70558
c) 584
d) 2935
e) 35277
Question 22: Instructions: In the following number series only one number is wrong. Find out the wrong number.
7, 12, 40, 222, 1742, 17390, 208608
a) 7
b) 12
c) 40
d) 1742
e) 208608
Question 23: 7,10,16,28,52,?,196
a) 100
b) 90
c) 160
d) 150
e) None of these
Question 24: 3,219,344,408,?,443,444
a) 416
b) 435
c) 423
d) 428
e) None of these
Question 25: 101,103,99,105,97,?,95
a) 93
b) 104
c) 108
d) 107
e) None of these
Answers & Solutions:
1) Answer (C)
194+38 = 232 ; 232+42 = 274 ; 274+46 = 320 ; 320+50 = 370
2) Answer (B)
21+16 = 37 ; 37+20 = 57 ; 57+24 = 81 ; 81+28 = 109
3) Answer (A)
20+19=39 ; 39+(19+8)=66 ; 66+(19+8+8)=101 ; 101+(19+8+8+8)=144
4) Answer (C)
$1^2+1=2$ ;
$2^2-2=2$ ;
$3^2+3=12$ ;
$4^2-4=12$ ;
$5^2+5=30$;
$6^2-6=30$ ;
$7^2+7=56$
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5) Answer (B)
5+2.5 = 7.5 ; 7.5+2.5=10 ; 10+2.5=12.5 ; 12.5+2.5=15 ; 15+2.5=17.5
6) Answer (B)
1*2+3=5 ; 2*3+4=10 ; 3*4+5=17 ; 4*5+6=26 ; 5*6+7=37 ; 6*7+8=50 ; 7*8+9 = 65
7) Answer (D)
26=4*5+6 ; 65= 7*8+9 ; 122=10*11+12 ; 197= 13*14+15 ; 290 = 16*17+18
8) Answer (C)
9) Answer (D)
10) Answer (B)
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11) Answer (D)
$5963 – (3)^2$ = (5963 – 9) = 5954
$5954 – (4)^2$ = (5954 – 16) =5938
$5938 – (5)^2$ = (5938 – 25) = 5913
$5913 – (6)^2$ = (5913 – 36) = 5877
$5877 – (7)^2$ = (5877 – 49) = 5828
12) Answer (B)
8 × 7 = 56
56 × 6 = 336
336 × 7 = 2352
2352 × 6 = 14112
14112 × 7 = 98784
13) 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
14) Answer (D)
11 = 1 , 22 = 4 , 33 = 27 ≠ 25 , 44 = 256 , 55 = 3125 , 66 = 46656 , 77 = 823543
15) Answer (E)
9070 – 153 = 5675 , 5675 – 133 = 3478 , 3478 – 113 = 2147 , 2147 – 93 = 1418 , 1418 – 73 = 1075 ≠ 1077 , 1075 – 53 = 950
16) Answer (C)
6 x 7 + 72 = 91 , 91 x 6 + 62 = 582 ≠ 584 , 582 x 5 + 52 = 2935,…
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17) 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
18) 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
19) Answer (D)
11 = 1 , 22 = 4 , 33 = 27 ≠ 25 , 44 = 256 , 55 = 3125 , 66 = 46656 , 77 = 823543
20) Answer (E)
9070 – 153 = 5675 , 5675 – 133 = 3478 , 3478 – 113 = 2147 , 2147 – 93 = 1418 , 1418 – 73 = 1075 ≠ 1077 , 1075 – 53 = 950
21) Answer (C)
6 x 7 + 72 = 91 , 91 x 6 + 62 = 582 ≠ 584 , 582 x 5 + 52 = 2935,…
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22) 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
23) Answer (A)
In this series the nth term can be given by (previous term + 3*2n-2)
We are supposed to find 6th term, which is given as 52+3*24 = 52+48=100
24) Answer (B)
$219 – 3 = 216 = 6^3$
$344-219 = 125 = 5^3$
$408 – 344 = 64 = 4^3$
So, the number in the question mark equals $408+3^3 = 435$
25) Answer (D)
There are two Arithmetic progression series here, whose terms are written alternately.
101,99,97….with common difference -2
And 103,105 with common difference 2 and unknown term belongs to this series.
Thus, the unknown term is 107
