NUMBER SERIES BASED ON PREVIOUS YEARS SBI AND IBPS VARIOUS EXAMS
SBI CLERK PRE-2020
1. ? 100 150 375 1312.50
a. 100
b. 200
c. 150
d. 400
e. 50
2. 104 ? 96 120 88 128
a.112
b.110
c.114
d.118
e.108
3. 15 8 9 15 32 ?
a.66
b.99
c.80
d.82.50
e.80.50
4. 6 8 14 26 46 ?
a.72
b.84
c.96
d.80
e.76
5. 72000 36000 12000 3000 600 ?
a.120
b.200
c.300
d.150
e.100
In all banking exams conducted by IBPS in India, apart from number series, there is a great significance or scoring topic is coding-decoding
so, here we are going to share all patterns of coding-decoding till now
SBI CLERK 2019 MAINS-WRONG NUMBER SERIES
1. 8 10 20 70 320 1570 7830
a.7830
b.10
c.8
d.320
e.1570
2. 18 20 43 133 537 2691 16163
a. 43
b. 16163
c.133
d.537
e.2691
3.124 140 108 156 92 172 78
a. 108
b.124
c. 78
d. 92
e. 140
4. 260 380 510 618 759 856 1008
a. 759
b.1008
c. 260
d. 510
e. 618
5. 267 343 610 953 1563 2515 4079
a. 4079
b.953
c.343
d. 267
e. 2515
6. 36 80 166 340 690 1392 2798
a.690
b. 36
c.340
d. 1392
e. 80
7. 30 100 230 490 1010 2050 4130
a. 30
b.4130
c.1010
d.490
e. 2050
8. 8000 3200 1280 512 204.80 ?
a.80.25
b. 81.92
c.86.75
d.90.00
e.76.34
9. 33 321 465 573 ? 600
a.595
b.585
c.576
d.581
e. 591
10. 30 45 90 225 675 ?
a. 1685
b. 1791.50
c. 2250
d. 2362.50
e. 2476.50
Before moving further in a missing series of previous year questions in all banking exams we should also keep in our mind to score more marks from the direction topic. Most of the time, students get confused in direction sense so, we are sharing a details shortcut and proper understanding of the direction and sense.
DISTANCE AND DIRECTION- https://www.kumudmaths.in/2021/11/distance-and-direction-theory-tricks.html
IBPS PO NUMBER SERIES- 2020
Q1. 9.8 ? 8.9 11.6 8 12.5
a. 10.7 b. 11.7 c. 10.5 d. 10.9 e. 11.3
Sol- Step-1 check common diff. in rest of terms except first two so,
11.6- 8.9= 2.7 = addition of 2.7
8- 11.6 = 3.6 = subtraction of 3.6
12.5 - 8 = 4.5 = addition of 4.5
similarly based on same logic of addition and subtraction alternatively and table of 0.9. Use it in above series,
? = 9.8 + 0.9 = 10.7 similarly, 10.7 - 1.8 = 8.9
hence option 'a' is correct.
Q2. 400 274 209 181 172 ?
a. 169 b. 173 c. 168 d. 171 e. 170
Ans- common diff.(c.d)
series are decreasing with moderate margin so go for common difference technique i.e., next term - previous term.
First cd= 126 65 28 9
= (5)^3 +1 (4)^3 +1 (3)^3 +1 (2)^3 +1 so, next
term /c.d will be = (1)^3 +1 = 2
? = 172 - 2 = 170
Q3. 1 1 ? 15 105 945
a.2 b. 3 c. 4 d. 1.5 e. 2.5
Sol- Initial term is missing so go for last few terms so that some logic we can
easily find don't loose patience while solving questions in exam hall wait for get logic.
Logic= 1= 1 * 1
105 = 15 *7
945 = 105 * 9
so, based on it you can see series is based on multiplication series with a gap of 2.
? = 1 * 3 = 3 we can check next term it should be = 3 * 5 = 15.
Final logic= multiply(*) by 1 , *3 , * 5 , * 7
Q4. 12 ? 6 9 1 8 45
a. 15 b. 8 c. 6 d. 12 e. 4
Sol-
Q5. 34 18 10 6 ? 3
a. 9 b. 4 c. 3 d. 2 e. 6
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